diff --git a/pom.xml b/pom.xml
index 8c34d98..5241fde 100644
--- a/pom.xml
+++ b/pom.xml
@@ -68,18 +68,18 @@
      	<dependency>
     		<groupId>org.slf4j</groupId>
     		<artifactId>slf4j-api</artifactId>
-    		<version>${slf4j.version}</version>
+    		<version>1.7.5</version>
     	</dependency>
     	<dependency>
     		<groupId>org.slf4j</groupId>
     		<artifactId>slf4j-jdk14</artifactId>
-    		<version>${slf4j.version}</version>
+    		<version>1.7.5</version>
     		<scope>test</scope>
     	</dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>