diff --git a/npm/preview-publish.ps1 b/npm/preview-publish.ps1
index f10173226b..da705d07f9 100644
--- a/npm/preview-publish.ps1
+++ b/npm/preview-publish.ps1
@@ -16,7 +16,6 @@ $commands = (
   "npm install",
   "npm run publish-packages -- --nextVersion $Version --preview",
   "cd ../../",
-  "yarn",
   "yarn lerna publish $Version --no-push --yes --no-git-reset --no-commit-hooks --no-git-tag-version --force-publish --dist-tag preview"
 )
 
diff --git a/npm/publish.ps1 b/npm/publish.ps1
index 69f9ece982..a510527401 100644
--- a/npm/publish.ps1
+++ b/npm/publish.ps1
@@ -16,7 +16,6 @@ $commands = (
   "npm install",
   "npm run publish-packages -- --nextVersion $Version",
   "cd ../../",
-  "yarn",
   "yarn lerna publish $Version --no-push --yes --no-git-reset --no-commit-hooks --no-git-tag-version --force-publish",
   "yarn update:templates",
   "yarn gulp:app",