diff --git a/pom.xml b/pom.xml
index cede1fe..1c3118c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,22 +39,22 @@
         <dependency>
             <groupId>org.apache.kafka</groupId>
             <artifactId>kafka-clients</artifactId>
-            <version>${kafka-client.version}</version>
+            <version>2.3.1</version>
         </dependency>
         <dependency>
             <groupId>org.apache.kafka</groupId>
             <artifactId>kafka-streams</artifactId>
-            <version>${kafka-client.version}</version>
+            <version>2.3.1</version>
         </dependency>
         <dependency>
             <groupId>io.prometheus</groupId>
             <artifactId>simpleclient</artifactId>
-            <version>${io.prometheus.version}</version>
+            <version>0.8.0</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>