diff --git a/build.gradle b/build.gradle
index 3fcbd944..63961364 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,9 +1,10 @@
 buildscript {
 	dependencies {
-		classpath 'io.spring.gradle:spring-build-conventions:0.0.18.RELEASE'
+		classpath 'io.spring.gradle:spring-build-conventions:0.0.25.RELEASE'
 		classpath "org.springframework.boot:spring-boot-gradle-plugin:$springBootVersion"
 	}
 	repositories {
+		gradlePluginPortal()
 		maven { url 'https://repo.spring.io/plugins-release' }
 	}
 }
diff --git a/etc/checkstyle/suppressions.xml b/etc/checkstyle/suppressions.xml
index 305c7f83..71acb3d2 100644
--- a/etc/checkstyle/suppressions.xml
+++ b/etc/checkstyle/suppressions.xml
@@ -12,4 +12,6 @@
 	<!-- samples -->
 	<suppress files="[\\/]samples[\\/]" checks="Javadoc*"/>
 	<suppress files="[\\/]samples[\\/].+Application\.java" checks="HideUtilityClassConstructor"/>
+
+	<suppress files="SessionRepositoryFilterTests\.java" checks="SpringLambda"/>
 </suppressions>