diff --git a/src/OpenIddict.Server/OpenIddictServerEvents.Authentication.cs b/src/OpenIddict.Server/OpenIddictServerEvents.Authentication.cs
index 9350d710..cf85ba36 100644
--- a/src/OpenIddict.Server/OpenIddictServerEvents.Authentication.cs
+++ b/src/OpenIddict.Server/OpenIddictServerEvents.Authentication.cs
@@ -156,11 +156,6 @@ namespace OpenIddict.Server
                 set => Transaction.Response = value;
             }
 
-            /// <summary>
-            /// Gets or sets the security principal.
-            /// </summary>
-            public ClaimsPrincipal? Principal { get; set; }
-
             /// <summary>
             /// Gets the access code expected to
             /// be returned to the client application.
diff --git a/src/OpenIddict.Server/OpenIddictServerEvents.Exchange.cs b/src/OpenIddict.Server/OpenIddictServerEvents.Exchange.cs
index bd256815..4bace5f1 100644
--- a/src/OpenIddict.Server/OpenIddictServerEvents.Exchange.cs
+++ b/src/OpenIddict.Server/OpenIddictServerEvents.Exchange.cs
@@ -126,11 +126,6 @@ namespace OpenIddict.Server
                 set => Transaction.Response = value;
             }
 
-            /// <summary>
-            /// Gets or sets the security principal used to forge the token response.
-            /// </summary>
-            public ClaimsPrincipal? Principal { get; set; }
-
             /// <summary>
             /// Gets the error code returned to the client application.
             /// When the response indicates a successful response,