diff --git a/deps/protobuf/ruby/pom.xml b/deps/protobuf/ruby/pom.xml
index adf6ff207..fa5f88b1b 100644
--- a/deps/protobuf/ruby/pom.xml
+++ b/deps/protobuf/ruby/pom.xml
@@ -75,7 +75,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-core</artifactId>
-            <version>2.4.3</version>
+            <version>2.20.1</version>
         </dependency>
         <dependency>
             <groupId>org.jruby</groupId>