diff --git a/java-tpu/google-cloud-tpu/pom.xml b/java-tpu/google-cloud-tpu/pom.xml
index aaf83a2337b7..7b0786b224fd 100644
--- a/java-tpu/google-cloud-tpu/pom.xml
+++ b/java-tpu/google-cloud-tpu/pom.xml
@@ -61,6 +61,10 @@
       <groupId>com.google.api</groupId>
       <artifactId>gax</artifactId>
     </dependency>
+    <dependency>
+      <groupId>com.google.api</groupId>
+      <artifactId>gax-httpjson</artifactId>
+    </dependency>
     <dependency>
       <groupId>com.google.api</groupId>
       <artifactId>gax-grpc</artifactId>
@@ -92,12 +96,29 @@
       <artifactId>grpc-google-cloud-tpu-v2alpha1</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>com.google.api.grpc</groupId>
+      <artifactId>grpc-google-common-protos</artifactId>
+      <scope>test</scope>
+    </dependency>
     <!-- Need testing utility classes for generated gRPC clients tests -->
+    <dependency>
+      <groupId>com.google.api</groupId>
+      <artifactId>gax</artifactId>
+      <classifier>testlib</classifier>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>com.google.api</groupId>
       <artifactId>gax-grpc</artifactId>
       <classifier>testlib</classifier>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>com.google.api</groupId>
+      <artifactId>gax-httpjson</artifactId>
+      <classifier>testlib</classifier>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 </project>