diff --git a/config/channels/in-memory-channel/configmaps/tracing.yaml b/config/channels/in-memory-channel/configmaps/tracing.yaml
index 30ac4974a3a..f3c252cd9af 100644
--- a/config/channels/in-memory-channel/configmaps/tracing.yaml
+++ b/config/channels/in-memory-channel/configmaps/tracing.yaml
@@ -24,7 +24,7 @@ metadata:
     app.kubernetes.io/version: devel
     app.kubernetes.io/part-of: knative-eventing
   annotations:
-    knative.dev/example-checksum: "4002b4c2"
+    knative.dev/example-checksum: "c8f8c47b"
 data:
   _example: |
     ################################
@@ -41,18 +41,13 @@ data:
     # this example block and unindented to be in the data block
     # to actually change the configuration.
     #
-    # This may be "zipkin" or "stackdriver", the default is "none"
+    # This may be "zipkin" or "none", the default is "none"
     backend: "none"
 
     # URL to zipkin collector where traces are sent.
     # This must be specified when backend is "zipkin"
     zipkin-endpoint: "http://zipkin.istio-system.svc.cluster.local:9411/api/v2/spans"
 
-    # The GCP project into which stackdriver metrics will be written
-    # when backend is "stackdriver".  If unspecified, the project-id
-    # is read from GCP metadata when running on GCP.
-    stackdriver-project-id: "my-project"
-
     # Enable zipkin debug mode. This allows all spans to be sent to the server
     # bypassing sampling.
     debug: "false"
diff --git a/config/core/configmaps/tracing.yaml b/config/core/configmaps/tracing.yaml
index a1f288b2b6a..4f9b7dfebdf 100644
--- a/config/core/configmaps/tracing.yaml
+++ b/config/core/configmaps/tracing.yaml
@@ -24,7 +24,7 @@ metadata:
     app.kubernetes.io/version: devel
     app.kubernetes.io/part-of: knative-eventing
   annotations:
-    knative.dev/example-checksum: "4002b4c2"
+    knative.dev/example-checksum: "0492ceb0"
 data:
   _example: |
     ################################
@@ -41,18 +41,13 @@ data:
     # this example block and unindented to be in the data block
     # to actually change the configuration.
     #
-    # This may be "zipkin" or "stackdriver", the default is "none"
+    # This may be "zipkin" or "none". the default is "none"
     backend: "none"
 
     # URL to zipkin collector where traces are sent.
     # This must be specified when backend is "zipkin"
     zipkin-endpoint: "http://zipkin.istio-system.svc.cluster.local:9411/api/v2/spans"
 
-    # The GCP project into which stackdriver metrics will be written
-    # when backend is "stackdriver".  If unspecified, the project-id
-    # is read from GCP metadata when running on GCP.
-    stackdriver-project-id: "my-project"
-
     # Enable zipkin debug mode. This allows all spans to be sent to the server
     # bypassing sampling.
     debug: "false"
diff --git a/hack/update-checksums.sh b/hack/update-checksums.sh
index 84b6f85fe44..b047f13dfa8 100755
--- a/hack/update-checksums.sh
+++ b/hack/update-checksums.sh
@@ -27,3 +27,4 @@ fi
 source $(dirname $0)/../vendor/knative.dev/hack/library.sh
 
 go run "${REPO_ROOT_DIR}/vendor/knative.dev/pkg/configmap/hash-gen" "${REPO_ROOT_DIR}"/config/core/configmaps/*.yaml
+go run "${REPO_ROOT_DIR}/vendor/knative.dev/pkg/configmap/hash-gen" "${REPO_ROOT_DIR}"/config/channels/in-memory-channel/configmaps/*.yaml