diff --git a/oai-proxy-api/pom.xml b/oai-proxy-api/pom.xml
index a4527f3..afb7e25 100644
--- a/oai-proxy-api/pom.xml
+++ b/oai-proxy-api/pom.xml
@@ -108,7 +108,7 @@
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-core</artifactId>
-			<version>3.1.2.RELEASE</version>
+			<version>4.3.19.RELEASE</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>