diff --git a/build.gradle b/build.gradle
index 214a55baf0..4771868ca6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,7 +27,7 @@ allprojects {
 
 	ext.releaseBuild = version.endsWith('RELEASE')
 	ext.snapshotBuild = version.endsWith('SNAPSHOT')
-	ext.springVersion = '4.2.5.RELEASE'
+	ext.springVersion = '4.3.1.BUILD-SNAPSHOT'
 	ext.springLdapVersion = '2.0.2.RELEASE'
 
 	group = 'org.springframework.security'
diff --git a/core/src/main/java/org/springframework/security/core/SpringSecurityCoreVersion.java b/core/src/main/java/org/springframework/security/core/SpringSecurityCoreVersion.java
index 413af7ab3e..0c14d0574f 100644
--- a/core/src/main/java/org/springframework/security/core/SpringSecurityCoreVersion.java
+++ b/core/src/main/java/org/springframework/security/core/SpringSecurityCoreVersion.java
@@ -17,6 +17,7 @@ package org.springframework.security.core;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+
 import org.springframework.core.SpringVersion;
 
 /**
@@ -39,7 +40,7 @@ public class SpringSecurityCoreVersion {
 	 */
 	public static final long SERIAL_VERSION_UID = 410L;
 
-	static final String MIN_SPRING_VERSION = "4.2.5.RELEASE";
+	static final String MIN_SPRING_VERSION = "4.3.1.BUILD-SNAPSHOT";
 
 	static {
 		performVersionChecks();
diff --git a/gradle/boot-sample.gradle b/gradle/boot-sample.gradle
index b87b8d99a0..8357b5443a 100644
--- a/gradle/boot-sample.gradle
+++ b/gradle/boot-sample.gradle
@@ -2,4 +2,12 @@ apply plugin: 'spring-boot'
 
 sonarqube {
 	skipProject = true
+}
+
+configurations.all {
+	resolutionStrategy.eachDependency { DependencyResolveDetails details ->
+		if (details.requested.group == 'org.springframework') {
+			details.useVersion springVersion
+		}
+	}
 }
\ No newline at end of file