diff --git a/pom.xml b/pom.xml
index fd6539b..f3ba74e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,13 +19,13 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
+            <version>3.8.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>