diff --git a/pom.xml b/pom.xml
index 78a2f73..2c30767 100644
--- a/pom.xml
+++ b/pom.xml
@@ -34,7 +34,7 @@
         <threetenbp.version>1.4.1</threetenbp.version>
         <gson.version>2.8.6</gson.version>
         <h2database.version>1.4.200</h2database.version>
-        <postgres.version>42.2.18</postgres.version>
+        <postgres.version>42.4.1</postgres.version>
         <mysql.version>8.0.22</mysql.version>
 
         <calculator.wsdl.url>http://www.dneonline.com/calculator.asmx?WSDL</calculator.wsdl.url>