diff --git a/gradle/libraries.gradle b/gradle/libraries.gradle
index cea2364550..2fcdfbfa5a 100644
--- a/gradle/libraries.gradle
+++ b/gradle/libraries.gradle
@@ -132,7 +132,7 @@ ext {
             // EL required by Hibernate Validator at test runtime
             expression_language: "org.glassfish:javax.el:${elVersion}",
 
-            c3p0:            "com.mchange:c3p0:0.9.5.3",
+            c3p0:            "com.mchange:c3p0:0.9.5.5",
             ehcache:         "net.sf.ehcache:ehcache:2.10.6",
             ehcache3:        "org.ehcache:ehcache:3.6.1",
             jcache:          "javax.cache:cache-api:1.0.0",