diff --git a/pom.xml b/pom.xml
index 0432234..544bd22 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,7 +49,7 @@
         <dependency>
             <groupId>org.sonarsource.sonarqube</groupId>
             <artifactId>sonar-plugin-api</artifactId>
-            <version>${sonar.version}</version>
+            <version>7.9.1</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
@@ -62,51 +62,51 @@
         <dependency>
             <groupId>org.sonarsource.java</groupId>
             <artifactId>java-frontend</artifactId>
-            <version>${sonarjava.version}</version>
+            <version>7.5.0.28054</version>
         </dependency>
         <dependency>
             <groupId>org.sonarsource.java</groupId>
             <artifactId>java-checks-testkit</artifactId>
-            <version>${sonarjava.version}</version>
+            <version>6.0.0.20538</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>${slf4j-api.version}</version>
+            <version>1.6.2</version>
         </dependency>
         <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-core.version}</version>
+            <version>3.7.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>${logback-classic.version}</version>
+            <version>1.3.15</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>${gson.version}</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>${guava.version}</version>
+            <version>32.0.1-jre</version>
         </dependency>
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
-            <version>${commons-lang3.version}</version>
+            <version>3.7</version>
         </dependency>
     </dependencies>