diff --git a/google/devtools/containeranalysis/v1/containeranalysis.proto b/google/devtools/containeranalysis/v1/containeranalysis.proto
index 1ae536d2a7..5c855acbd5 100644
--- a/google/devtools/containeranalysis/v1/containeranalysis.proto
+++ b/google/devtools/containeranalysis/v1/containeranalysis.proto
@@ -22,6 +22,7 @@ import "google/iam/v1/iam_policy.proto";
 import "google/iam/v1/policy.proto";
 import "google/protobuf/timestamp.proto";
 
+option csharp_namespace = "Google.Cloud.DevTools.ContainerAnalysis.V1";
 option go_package = "google.golang.org/genproto/googleapis/devtools/containeranalysis/v1;containeranalysis";
 option java_multiple_files = true;
 option java_package = "com.google.containeranalysis.v1";
diff --git a/google/devtools/containeranalysis/v1/containeranalysis_gapic.yaml b/google/devtools/containeranalysis/v1/containeranalysis_gapic.yaml
index 29adb4b123..e3f09d60ec 100644
--- a/google/devtools/containeranalysis/v1/containeranalysis_gapic.yaml
+++ b/google/devtools/containeranalysis/v1/containeranalysis_gapic.yaml
@@ -10,7 +10,7 @@ language_settings:
     package_name: cloud.google.com/go/containeranalysis/apiv1
     release_level: BETA
   csharp:
-    package_name: Google.Devtools.Containeranalysis.V1
+    package_name: Google.Cloud.DevTools.ContainerAnalysis.V1
   ruby:
     package_name: Google::Cloud::Devtools::Containeranalysis::V1
   php: