diff --git a/backend/pom.xml b/backend/pom.xml
index f3d33e3..0309e9e 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -17,7 +17,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
         <!-- dependencies -->
-        <postgresql.version>42.2.20</postgresql.version>
+        <postgresql.version>42.4.1</postgresql.version>
         <spring.boot.version>2.5.0</spring.boot.version>
         <spring.boot.starter.celesta.version>2.1.49</spring.boot.starter.celesta.version>
         <celesta.version>7.3.45</celesta.version>