diff --git a/pom.xml b/pom.xml
index 16edeeb..065fd11 100644
--- a/pom.xml
+++ b/pom.xml
@@ -124,19 +124,19 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.2.4</version>
+      <version>2.1</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
-      <groupId>org.apache.commons</groupId>
-      <artifactId>commons-lang3</artifactId>
-      <version>3.2.1</version>
+      <groupId>commons-lang</groupId>
+      <artifactId>commons-lang</artifactId>
+      <version>2.5</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>commons-codec</groupId>
       <artifactId>commons-codec</artifactId>
-      <version>1.9</version>
+      <version>1.4</version>
       <scope>provided</scope>
     </dependency>
     <dependency>