diff --git a/pom.xml b/pom.xml
index 8c6faf59..bb56f28b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -81,7 +81,7 @@
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>17</java.version>
 		<!-- internal dependencies -->
-		<spring-boot.version>4.1.0-SNAPSHOT</spring-boot.version>
+		<spring-boot.version>4.1.0-M1</spring-boot.version>
 		<jackson.version>2.21.0</jackson.version>
 		<junit.version>6.0.2</junit.version>
 		<kotlin.coroutines.version>1.10.2</kotlin.coroutines.version>
diff --git a/samples/grpc-client/build.gradle b/samples/grpc-client/build.gradle
index 551286d1..8a34ef77 100644
--- a/samples/grpc-client/build.gradle
+++ b/samples/grpc-client/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+    id 'org.springframework.boot' version '4.1.0-M1'
     id 'io.spring.dependency-management' version '1.1.7'
     id 'com.google.protobuf' version '0.9.4'
 }
diff --git a/samples/grpc-client/pom.xml b/samples/grpc-client/pom.xml
index d2edb502..53c0f285 100644
--- a/samples/grpc-client/pom.xml
+++ b/samples/grpc-client/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-oauth2/build.gradle b/samples/grpc-oauth2/build.gradle
index 41edd4ed..0c55e67f 100644
--- a/samples/grpc-oauth2/build.gradle
+++ b/samples/grpc-oauth2/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+    id 'org.springframework.boot' version '4.1.0-M1'
     id 'io.spring.dependency-management' version '1.1.7'
     id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-oauth2/pom.xml b/samples/grpc-oauth2/pom.xml
index 92a01e37..692a19d1 100644
--- a/samples/grpc-oauth2/pom.xml
+++ b/samples/grpc-oauth2/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-reactive/build.gradle b/samples/grpc-reactive/build.gradle
index d7e618de..db3640b4 100644
--- a/samples/grpc-reactive/build.gradle
+++ b/samples/grpc-reactive/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
 	id 'com.google.protobuf' version '0.9.4'
 }
diff --git a/samples/grpc-reactive/pom.xml b/samples/grpc-reactive/pom.xml
index b62a3f7e..b02642ff 100644
--- a/samples/grpc-reactive/pom.xml
+++ b/samples/grpc-reactive/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-secure/build.gradle b/samples/grpc-secure/build.gradle
index 27da49be..f19a5b41 100644
--- a/samples/grpc-secure/build.gradle
+++ b/samples/grpc-secure/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
 	id 'org.graalvm.buildtools.native' version '0.10.3'
 	id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-secure/pom.xml b/samples/grpc-secure/pom.xml
index 6fe3d46c..2ca09c59 100644
--- a/samples/grpc-secure/pom.xml
+++ b/samples/grpc-secure/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-server-kotlin/build.gradle b/samples/grpc-server-kotlin/build.gradle
index 2b0a39e5..90545986 100644
--- a/samples/grpc-server-kotlin/build.gradle
+++ b/samples/grpc-server-kotlin/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
     id 'com.google.protobuf' version '0.9.4'
     id 'org.jetbrains.kotlin.jvm' version '2.2.21'
diff --git a/samples/grpc-server-kotlin/pom.xml b/samples/grpc-server-kotlin/pom.xml
index affd90bd..bf9a5c55 100644
--- a/samples/grpc-server-kotlin/pom.xml
+++ b/samples/grpc-server-kotlin/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-server-netty-shaded/build.gradle b/samples/grpc-server-netty-shaded/build.gradle
index fcfb1eab..9051d59f 100644
--- a/samples/grpc-server-netty-shaded/build.gradle
+++ b/samples/grpc-server-netty-shaded/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
     id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-server-netty-shaded/pom.xml b/samples/grpc-server-netty-shaded/pom.xml
index 99d8bf4d..51fd1fc3 100644
--- a/samples/grpc-server-netty-shaded/pom.xml
+++ b/samples/grpc-server-netty-shaded/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.example</groupId>
diff --git a/samples/grpc-server/build.gradle b/samples/grpc-server/build.gradle
index 55edcf39..bfaab1a9 100644
--- a/samples/grpc-server/build.gradle
+++ b/samples/grpc-server/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+    id 'org.springframework.boot' version '4.1.0-M1'
     id 'io.spring.dependency-management' version '1.1.7'
     id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-server/pom.xml b/samples/grpc-server/pom.xml
index 4d3cc27f..efcdb438 100644
--- a/samples/grpc-server/pom.xml
+++ b/samples/grpc-server/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-tomcat-secure/build.gradle b/samples/grpc-tomcat-secure/build.gradle
index cf0ed08d..e5c1a614 100644
--- a/samples/grpc-tomcat-secure/build.gradle
+++ b/samples/grpc-tomcat-secure/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
     id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-tomcat-secure/pom.xml b/samples/grpc-tomcat-secure/pom.xml
index 71403fb5..b2586c24 100644
--- a/samples/grpc-tomcat-secure/pom.xml
+++ b/samples/grpc-tomcat-secure/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-tomcat/build.gradle b/samples/grpc-tomcat/build.gradle
index 47e260aa..a9de7409 100644
--- a/samples/grpc-tomcat/build.gradle
+++ b/samples/grpc-tomcat/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
     id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-tomcat/pom.xml b/samples/grpc-tomcat/pom.xml
index abc87ce8..989674ad 100644
--- a/samples/grpc-tomcat/pom.xml
+++ b/samples/grpc-tomcat/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-webflux-secure/build.gradle b/samples/grpc-webflux-secure/build.gradle
index 582067d1..6f6f1d0c 100644
--- a/samples/grpc-webflux-secure/build.gradle
+++ b/samples/grpc-webflux-secure/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
     id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-webflux-secure/pom.xml b/samples/grpc-webflux-secure/pom.xml
index b333e114..48eff45c 100644
--- a/samples/grpc-webflux-secure/pom.xml
+++ b/samples/grpc-webflux-secure/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>
diff --git a/samples/grpc-webflux/build.gradle b/samples/grpc-webflux/build.gradle
index f0d2b8d6..dc08e76c 100644
--- a/samples/grpc-webflux/build.gradle
+++ b/samples/grpc-webflux/build.gradle
@@ -1,6 +1,6 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '4.1.0-SNAPSHOT'
+	id 'org.springframework.boot' version '4.1.0-M1'
 	id 'io.spring.dependency-management' version '1.1.7'
     id 'org.graalvm.buildtools.native' version '0.10.3'
     id 'com.google.protobuf' version '0.9.4'
diff --git a/samples/grpc-webflux/pom.xml b/samples/grpc-webflux/pom.xml
index 3d075a4b..b6442284 100644
--- a/samples/grpc-webflux/pom.xml
+++ b/samples/grpc-webflux/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>4.1.0-SNAPSHOT</version>
+		<version>4.1.0-M1</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>org.springframework.grpc</groupId>