diff --git a/WORKSPACE b/WORKSPACE
index 66d681289..7f6825b77 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -22,8 +22,8 @@ switched_rules_by_language(
 # section
 http_archive(
     name = "com_google_api_codegen",
-    strip_prefix = "gapic-generator-5fcbd748cd68bb8ab4732511c6c07c1a87db02a3",
-    urls = ["https://github.com/googleapis/gapic-generator/archive/5fcbd748cd68bb8ab4732511c6c07c1a87db02a3.zip"],
+    strip_prefix = "gapic-generator-4a5220485893da3ee8934615d1901626f5b18e36",
+    urls = ["https://github.com/googleapis/gapic-generator/archive/4a5220485893da3ee8934615d1901626f5b18e36.zip"],
 )
 
 ##############################################################################
diff --git a/google/cloud/dialogflow/v2/BUILD.bazel b/google/cloud/dialogflow/v2/BUILD.bazel
index 8b4325ad4..1d0182e1d 100644
--- a/google/cloud/dialogflow/v2/BUILD.bazel
+++ b/google/cloud/dialogflow/v2/BUILD.bazel
@@ -20,6 +20,7 @@ proto_library(
     ],
     deps = [
         "//google/api:annotations_proto",
+        "//google/api:client_proto",
         "//google/api:resource_proto",
         "//google/longrunning:operations_proto",
         "//google/rpc:status_proto",
diff --git a/google/cloud/dialogflow/v2beta1/BUILD.bazel b/google/cloud/dialogflow/v2beta1/BUILD.bazel
index 79dc51dcb..336995642 100644
--- a/google/cloud/dialogflow/v2beta1/BUILD.bazel
+++ b/google/cloud/dialogflow/v2beta1/BUILD.bazel
@@ -22,6 +22,7 @@ proto_library(
     ],
     deps = [
         "//google/api:annotations_proto",
+        "//google/api:client_proto",
         "//google/api:resource_proto",
         "//google/longrunning:operations_proto",
         "//google/rpc:status_proto",