diff --git a/pom.xml b/pom.xml
index e17ad6b..a61bbbe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -168,32 +168,32 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>${slf4j.version}</version>
+            <version>1.7.16</version>
         </dependency>
 
         <!-- Only have logger implementation at test time -->
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-ext</artifactId>
-            <version>${slf4j.version}</version>
+            <version>1.7.26</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-slf4j-impl</artifactId>
-            <version>${log4j.version}</version>
+            <version>2.17.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>${log4j.version}</version>
+            <version>2.17.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>${log4j.version}</version>
+            <version>2.17.1</version>
             <scope>test</scope>
         </dependency>