diff --git a/samples/default-authorizationserver/gradle.properties b/samples/default-authorizationserver/gradle.properties
deleted file mode 100644
index 712ac6a7c..000000000
--- a/samples/default-authorizationserver/gradle.properties
+++ /dev/null
@@ -1 +0,0 @@
-spring-security.version=6.1.0
diff --git a/samples/demo-authorizationserver/gradle.properties b/samples/demo-authorizationserver/gradle.properties
deleted file mode 100644
index 712ac6a7c..000000000
--- a/samples/demo-authorizationserver/gradle.properties
+++ /dev/null
@@ -1 +0,0 @@
-spring-security.version=6.1.0
diff --git a/samples/demo-client/gradle.properties b/samples/demo-client/gradle.properties
deleted file mode 100644
index 712ac6a7c..000000000
--- a/samples/demo-client/gradle.properties
+++ /dev/null
@@ -1 +0,0 @@
-spring-security.version=6.1.0