diff --git a/modules/postgresql/build.gradle b/modules/postgresql/build.gradle
index b16ceaea2a8..bdc09dc71a2 100644
--- a/modules/postgresql/build.gradle
+++ b/modules/postgresql/build.gradle
@@ -11,7 +11,7 @@ dependencies {
 
     testCompile project(':jdbc-test')
     testCompile project(':test-support')
-    testCompile 'org.postgresql:postgresql:42.2.18'
+    testCompile 'org.postgresql:postgresql:42.5.4'
 
     testCompile testFixtures(project(':r2dbc'))
     testCompile 'io.r2dbc:r2dbc-postgresql:0.8.5.RELEASE'