diff --git a/rules_java_gapic/java_gapic.bzl b/rules_java_gapic/java_gapic.bzl
index a5bf043cca..f484c474d3 100644
--- a/rules_java_gapic/java_gapic.bzl
+++ b/rules_java_gapic/java_gapic.bzl
@@ -333,6 +333,7 @@ def java_gapic_library(
     # Test deps.
     actual_test_deps = [
         "@com_google_googleapis//google/type:type_java_proto",  # Commonly used.
+        "@com_google_googleapis//google/geo/type:viewport_java_proto",  # Used by Geo.
         "@com_google_api_gax_java//gax:gax_testlib",
         "@com_google_code_gson_gson//jar",
         "@junit_junit//jar",