diff --git a/cloud-sql/postgres/client-side-encryption/pom.xml b/cloud-sql/postgres/client-side-encryption/pom.xml
index 1a2f922aeed..9edb0ff7983 100644
--- a/cloud-sql/postgres/client-side-encryption/pom.xml
+++ b/cloud-sql/postgres/client-side-encryption/pom.xml
@@ -67,7 +67,7 @@
         <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>42.4.1</version>
+      <version>42.4.3</version>
     </dependency>
     <dependency>
       <groupId>com.google.crypto.tink</groupId>