diff --git a/sdks/java/extensions/google-cloud-platform-core/build.gradle b/sdks/java/extensions/google-cloud-platform-core/build.gradle
index efb4d731fdad..b7fe283b5897 100644
--- a/sdks/java/extensions/google-cloud-platform-core/build.gradle
+++ b/sdks/java/extensions/google-cloud-platform-core/build.gradle
@@ -20,7 +20,7 @@ import groovy.json.JsonOutput
 
 plugins { id 'org.apache.beam.module' }
 applyJavaNature(
-
+  enableStrictDependencies: true,
   automaticModuleName: 'org.apache.beam.sdk.extensions.gcp')
 
 description = "Apache Beam :: SDKs :: Java :: Extensions :: Google Cloud Platform Core"
@@ -51,12 +51,14 @@ dependencies {
   compile library.java.google_http_client
   compile library.java.slf4j_api
   compile library.java.joda_time
+  compile library.java.http_core
+  compile library.java.http_client
   compile library.java.jackson_annotations
   compile library.java.jackson_databind
+  permitUnusedDeclared library.java.jackson_databind // BEAM-11761
   provided library.java.hamcrest_core
   provided library.java.junit
   testCompile project(path: ":sdks:java:core", configuration: "shadowTest")
-  testCompile library.java.hamcrest_library
   testCompile library.java.mockito_core
   testRuntimeOnly library.java.slf4j_jdk14
 }