diff --git a/pom.xml b/pom.xml
index ee688c9..b10567e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -40,39 +40,39 @@
         <dependency>
             <groupId>org.glassfish.jersey.containers</groupId>
             <artifactId>jersey-container-servlet-core</artifactId>
-            <version>${jersey-version}</version>
+            <version>2.28-RC4</version>
         </dependency>
         <dependency>
             <groupId>org.glassfish.jersey.media</groupId>
             <artifactId>jersey-media-json-jackson</artifactId>
-            <version>${jersey-version}</version>
+            <version>2.39.1</version>
         </dependency>
         <dependency>
             <groupId>org.glassfish.jersey.core</groupId>
             <artifactId>jersey-server</artifactId>
-            <version>${jersey-version}</version>
+            <version>2.27</version>
         </dependency>
         <dependency>
             <groupId>org.glassfish.jersey.inject</groupId>
             <artifactId>jersey-hk2</artifactId>
-            <version>${jersey-version}</version>
+            <version>2.34</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5.6</version>
+            <version>4.5.13</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-resources-plugin</artifactId>
-            <version>3.1.0</version>
+            <version>3.3.0</version>
         </dependency>
     </dependencies>