diff --git a/pom.xml b/pom.xml
index 7e2ea34d..a38044cc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
diff --git a/test-server/pom.xml b/test-server/pom.xml
index cc5ac04d..347757f4 100644
--- a/test-server/pom.xml
+++ b/test-server/pom.xml
@@ -19,12 +19,12 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.5</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>com.sparkjava</groupId>
             <artifactId>spark-core</artifactId>
-            <version>2.9.1</version>
+            <version>2.9.3</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>