diff --git a/docker/spring-cloud-contract-docker/project/build.gradle b/docker/spring-cloud-contract-docker/project/build.gradle
index f169b70645..83ec6aa1dc 100644
--- a/docker/spring-cloud-contract-docker/project/build.gradle
+++ b/docker/spring-cloud-contract-docker/project/build.gradle
@@ -52,10 +52,10 @@ version = getProp(envVars, "PROJECT_VERSION") ?: '0.0.1-SNAPSHOT'
 repositories {
 	mavenLocal()
 	mavenCentral()
-	if (!"${verifierVersion}".contains("RELEASE")) {
+	if ("${verifierVersion}".contains("SNAPSHOT")) {
 		maven { url "https://repo.spring.io/snapshot" }
+	} else if ("${verifierVersion}".contains("M") || "${verifierVersion}".contains("RC")) {
 		maven { url "https://repo.spring.io/milestone" }
-		maven { url "https://repo.spring.io/release" }
 	}
 }
 
diff --git a/pom.xml b/pom.xml
index 818c7b8a88..44e0e9904f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -60,7 +60,7 @@
 		<jacoco-maven-plugin.version>0.8.5</jacoco-maven-plugin.version>
 		<exec-maven-plugin.version>1.6.0</exec-maven-plugin.version>
 		<InMemoryJavaCompiler.version>1.3.0</InMemoryJavaCompiler.version>
-		<thin-jar.version>1.0.27.RELEASE</thin-jar.version>
+		<thin-jar.version>1.0.30.RELEASE</thin-jar.version>
 
 		<contract.kotlin.version>1.5.20</contract.kotlin.version>
 		<commons-beanutils.version>1.9.4</commons-beanutils.version>