diff --git a/broker/pom.xml b/broker/pom.xml
index 89fbbc53..c608aee6 100644
--- a/broker/pom.xml
+++ b/broker/pom.xml
@@ -62,7 +62,7 @@
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
             <artifactId>json-simple</artifactId>
-            <version>1.1.2</version>
+            <version>1.1.1</version>
         </dependency>
 
         <dependency>
diff --git a/common/pom.xml b/common/pom.xml
index e6e6acbc..5deaaba3 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -35,7 +35,7 @@
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
             <artifactId>json-simple</artifactId>
-            <version>1.1.2</version>
+            <version>1.1.1</version>
         </dependency>
     </dependencies>
 
diff --git a/sdk/pom.xml b/sdk/pom.xml
index 6680e88c..4114ddc3 100644
--- a/sdk/pom.xml
+++ b/sdk/pom.xml
@@ -25,7 +25,7 @@
         <dependency>
             <groupId>com.googlecode.json-simple</groupId>
             <artifactId>json-simple</artifactId>
-            <version>1.1.2</version>
+            <version>1.1.1</version>
         </dependency>
 
         <dependency>