diff --git a/application/pom.xml b/application/pom.xml
index e13605f292..d97f6d92e3 100644
--- a/application/pom.xml
+++ b/application/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>application</artifactId>
diff --git a/common/actor/pom.xml b/common/actor/pom.xml
index 05e770888c..9b0053e0b6 100644
--- a/common/actor/pom.xml
+++ b/common/actor/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/cache/pom.xml b/common/cache/pom.xml
index d97b41fed4..fd9802a689 100644
--- a/common/cache/pom.xml
+++ b/common/cache/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/cluster-api/pom.xml b/common/cluster-api/pom.xml
index d789732519..d53ac4904d 100644
--- a/common/cluster-api/pom.xml
+++ b/common/cluster-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/coap-server/pom.xml b/common/coap-server/pom.xml
index 9bd3fc19d0..30001c929d 100644
--- a/common/coap-server/pom.xml
+++ b/common/coap-server/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/dao-api/pom.xml b/common/dao-api/pom.xml
index 0a84902178..0bd0f476ec 100644
--- a/common/dao-api/pom.xml
+++ b/common/dao-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/data/pom.xml b/common/data/pom.xml
index 6e3d66413a..f7c559c728 100644
--- a/common/data/pom.xml
+++ b/common/data/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/edge-api/pom.xml b/common/edge-api/pom.xml
index e78dff790d..4f0fe5aac0 100644
--- a/common/edge-api/pom.xml
+++ b/common/edge-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/message/pom.xml b/common/message/pom.xml
index 53fbdf97c4..0e290d1e01 100644
--- a/common/message/pom.xml
+++ b/common/message/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/pom.xml b/common/pom.xml
index 9303be4522..4c8f56cbce 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>common</artifactId>
diff --git a/common/proto/pom.xml b/common/proto/pom.xml
index 215fe27745..9a9b262d82 100644
--- a/common/proto/pom.xml
+++ b/common/proto/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/queue/pom.xml b/common/queue/pom.xml
index 9f895986dd..44e2239e05 100644
--- a/common/queue/pom.xml
+++ b/common/queue/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/script/pom.xml b/common/script/pom.xml
index d2a7a8bfcf..8c4ea360cf 100644
--- a/common/script/pom.xml
+++ b/common/script/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/script/remote-js-client/pom.xml b/common/script/remote-js-client/pom.xml
index 8aacb3bc59..2b780bf489 100644
--- a/common/script/remote-js-client/pom.xml
+++ b/common/script/remote-js-client/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>script</artifactId>
     </parent>
     <groupId>org.thingsboard.common.script</groupId>
diff --git a/common/script/script-api/pom.xml b/common/script/script-api/pom.xml
index f30adc303a..ed93701513 100644
--- a/common/script/script-api/pom.xml
+++ b/common/script/script-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>script</artifactId>
     </parent>
     <groupId>org.thingsboard.common.script</groupId>
diff --git a/common/stats/pom.xml b/common/stats/pom.xml
index 4a23faf475..7cc67d5821 100644
--- a/common/stats/pom.xml
+++ b/common/stats/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/transport/coap/pom.xml b/common/transport/coap/pom.xml
index dc5ecd7905..86459e9821 100644
--- a/common/transport/coap/pom.xml
+++ b/common/transport/coap/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/http/pom.xml b/common/transport/http/pom.xml
index bfb830d8ee..8ab2243ceb 100644
--- a/common/transport/http/pom.xml
+++ b/common/transport/http/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/lwm2m/pom.xml b/common/transport/lwm2m/pom.xml
index d5603a86ca..a6e7209f21 100644
--- a/common/transport/lwm2m/pom.xml
+++ b/common/transport/lwm2m/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/mqtt/pom.xml b/common/transport/mqtt/pom.xml
index c043d88e20..d074afc6b5 100644
--- a/common/transport/mqtt/pom.xml
+++ b/common/transport/mqtt/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/transport/pom.xml b/common/transport/pom.xml
index 01fa1c3c4a..fdd3ad21d5 100644
--- a/common/transport/pom.xml
+++ b/common/transport/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/transport/snmp/pom.xml b/common/transport/snmp/pom.xml
index b1a78519d3..5d4d37547f 100644
--- a/common/transport/snmp/pom.xml
+++ b/common/transport/snmp/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
 
diff --git a/common/transport/transport-api/pom.xml b/common/transport/transport-api/pom.xml
index e05414e77b..e2f03b060a 100644
--- a/common/transport/transport-api/pom.xml
+++ b/common/transport/transport-api/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.common</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.common.transport</groupId>
diff --git a/common/util/pom.xml b/common/util/pom.xml
index b0543bf7fb..dc75047267 100644
--- a/common/util/pom.xml
+++ b/common/util/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/common/version-control/pom.xml b/common/version-control/pom.xml
index 16559c2e2c..ea568dfcd9 100644
--- a/common/version-control/pom.xml
+++ b/common/version-control/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>common</artifactId>
     </parent>
     <groupId>org.thingsboard.common</groupId>
diff --git a/dao/pom.xml b/dao/pom.xml
index 3dbdd086db..5021742154 100644
--- a/dao/pom.xml
+++ b/dao/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>dao</artifactId>
diff --git a/monitoring/pom.xml b/monitoring/pom.xml
index 3b2f378a17..d30a9ca71f 100644
--- a/monitoring/pom.xml
+++ b/monitoring/pom.xml
@@ -21,7 +21,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
 
diff --git a/msa/black-box-tests/pom.xml b/msa/black-box-tests/pom.xml
index 549d773297..c1c0980b64 100644
--- a/msa/black-box-tests/pom.xml
+++ b/msa/black-box-tests/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/js-executor/pom.xml b/msa/js-executor/pom.xml
index 8641384cb0..62545f5ad6 100644
--- a/msa/js-executor/pom.xml
+++ b/msa/js-executor/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/monitoring/pom.xml b/msa/monitoring/pom.xml
index a58da78c17..1b03765586 100644
--- a/msa/monitoring/pom.xml
+++ b/msa/monitoring/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
 
diff --git a/msa/pom.xml b/msa/pom.xml
index 2ccf92deb3..ff394295f4 100644
--- a/msa/pom.xml
+++ b/msa/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>msa</artifactId>
diff --git a/msa/tb-node/pom.xml b/msa/tb-node/pom.xml
index cc93c0a078..6142c3c5d8 100644
--- a/msa/tb-node/pom.xml
+++ b/msa/tb-node/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/tb/pom.xml b/msa/tb/pom.xml
index dab3a52710..0c6046c09e 100644
--- a/msa/tb/pom.xml
+++ b/msa/tb/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/transport/coap/pom.xml b/msa/transport/coap/pom.xml
index 896915082e..325d4d45fa 100644
--- a/msa/transport/coap/pom.xml
+++ b/msa/transport/coap/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/http/pom.xml b/msa/transport/http/pom.xml
index 483c40c880..945c523455 100644
--- a/msa/transport/http/pom.xml
+++ b/msa/transport/http/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/lwm2m/pom.xml b/msa/transport/lwm2m/pom.xml
index db98c0828f..4d0370c1cf 100644
--- a/msa/transport/lwm2m/pom.xml
+++ b/msa/transport/lwm2m/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/mqtt/pom.xml b/msa/transport/mqtt/pom.xml
index 26d53f6b2f..20791ad61c 100644
--- a/msa/transport/mqtt/pom.xml
+++ b/msa/transport/mqtt/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard.msa</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/transport/pom.xml b/msa/transport/pom.xml
index c9473462d7..0b92e1fa97 100644
--- a/msa/transport/pom.xml
+++ b/msa/transport/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/transport/snmp/pom.xml b/msa/transport/snmp/pom.xml
index 7c6f267964..b16469523e 100644
--- a/msa/transport/snmp/pom.xml
+++ b/msa/transport/snmp/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.thingsboard.msa</groupId>
         <artifactId>transport</artifactId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
     </parent>
 
     <groupId>org.thingsboard.msa.transport</groupId>
diff --git a/msa/vc-executor-docker/pom.xml b/msa/vc-executor-docker/pom.xml
index 8cba9d153b..72995b05ab 100644
--- a/msa/vc-executor-docker/pom.xml
+++ b/msa/vc-executor-docker/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/vc-executor/pom.xml b/msa/vc-executor/pom.xml
index 5e86f5dd47..1b88a41692 100644
--- a/msa/vc-executor/pom.xml
+++ b/msa/vc-executor/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/msa/web-ui/pom.xml b/msa/web-ui/pom.xml
index bfbcb81012..361487b516 100644
--- a/msa/web-ui/pom.xml
+++ b/msa/web-ui/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>msa</artifactId>
     </parent>
     <groupId>org.thingsboard.msa</groupId>
diff --git a/netty-mqtt/pom.xml b/netty-mqtt/pom.xml
index 34a4a3e81a..f7361a686d 100644
--- a/netty-mqtt/pom.xml
+++ b/netty-mqtt/pom.xml
@@ -19,11 +19,11 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>netty-mqtt</artifactId>
-    <version>3.9.1-RC</version>
+    <version>4.0.0-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>Netty MQTT Client</name>
diff --git a/pom.xml b/pom.xml
index 5d46c743cd..e70a57fbbf 100755
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.thingsboard</groupId>
     <artifactId>thingsboard</artifactId>
-    <version>3.9.1-RC</version>
+    <version>4.0.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>Thingsboard</name>
diff --git a/rest-client/pom.xml b/rest-client/pom.xml
index 69cd079e6b..c8232512f7 100644
--- a/rest-client/pom.xml
+++ b/rest-client/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>rest-client</artifactId>
diff --git a/rule-engine/pom.xml b/rule-engine/pom.xml
index 5ed4ee9329..bd14daf22e 100644
--- a/rule-engine/pom.xml
+++ b/rule-engine/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>rule-engine</artifactId>
diff --git a/rule-engine/rule-engine-api/pom.xml b/rule-engine/rule-engine-api/pom.xml
index 4db9a7c4bf..886a2169f3 100644
--- a/rule-engine/rule-engine-api/pom.xml
+++ b/rule-engine/rule-engine-api/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>rule-engine</artifactId>
     </parent>
     <groupId>org.thingsboard.rule-engine</groupId>
diff --git a/rule-engine/rule-engine-components/pom.xml b/rule-engine/rule-engine-components/pom.xml
index 5b48de2224..750701894f 100644
--- a/rule-engine/rule-engine-components/pom.xml
+++ b/rule-engine/rule-engine-components/pom.xml
@@ -22,7 +22,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>rule-engine</artifactId>
     </parent>
     <groupId>org.thingsboard.rule-engine</groupId>
diff --git a/tools/pom.xml b/tools/pom.xml
index f60289c5f4..4f7c3f48a6 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>tools</artifactId>
diff --git a/transport/coap/pom.xml b/transport/coap/pom.xml
index 0b147c871a..452ef6ec9a 100644
--- a/transport/coap/pom.xml
+++ b/transport/coap/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/http/pom.xml b/transport/http/pom.xml
index f8e80627f3..2408340792 100644
--- a/transport/http/pom.xml
+++ b/transport/http/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/lwm2m/pom.xml b/transport/lwm2m/pom.xml
index 43f61039ed..3ba43f5b53 100644
--- a/transport/lwm2m/pom.xml
+++ b/transport/lwm2m/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/mqtt/pom.xml b/transport/mqtt/pom.xml
index 0fea251b03..e31d618890 100644
--- a/transport/mqtt/pom.xml
+++ b/transport/mqtt/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
     <groupId>org.thingsboard.transport</groupId>
diff --git a/transport/pom.xml b/transport/pom.xml
index e101a84e79..dd1c415e6c 100644
--- a/transport/pom.xml
+++ b/transport/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <artifactId>transport</artifactId>
diff --git a/transport/snmp/pom.xml b/transport/snmp/pom.xml
index 26f68cc598..08f23d2c2d 100644
--- a/transport/snmp/pom.xml
+++ b/transport/snmp/pom.xml
@@ -21,7 +21,7 @@
 
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>transport</artifactId>
     </parent>
 
diff --git a/ui-ngx/pom.xml b/ui-ngx/pom.xml
index b00064e2fd..9515f3b3ec 100644
--- a/ui-ngx/pom.xml
+++ b/ui-ngx/pom.xml
@@ -20,7 +20,7 @@
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.thingsboard</groupId>
-        <version>3.9.1-RC</version>
+        <version>4.0.0-SNAPSHOT</version>
         <artifactId>thingsboard</artifactId>
     </parent>
     <groupId>org.thingsboard</groupId>