diff --git a/openshift/patches/027-chmod-codegen.patch b/openshift/patches/027-chmod-codegen.patch
new file mode 100644
index 00000000000..1a2982bdf36
--- /dev/null
+++ b/openshift/patches/027-chmod-codegen.patch
@@ -0,0 +1,12 @@
+diff --git a/vendor/knative.dev/hack/codegen-library.sh b/vendor/knative.dev/hack/codegen-library.sh
+index d9cf1ce7e..0f21d457e 100644
+--- a/vendor/knative.dev/hack/codegen-library.sh
++++ b/vendor/knative.dev/hack/codegen-library.sh
+@@ -31,5 +31,5 @@ export GOBIN=${GOPATH}/bin # Set GOBIN explicitly as deepcopy-gen is installed b
+ export CODEGEN_PKG=${CODEGEN_PKG:-$(cd ${REPO_ROOT_DIR}; ls -d -1 ./vendor/k8s.io/code-generator 2>/dev/null || echo ../code-generator)}
+ export KNATIVE_CODEGEN_PKG=${KNATIVE_CODEGEN_PKG:-$(cd ${REPO_ROOT_DIR}; ls -d -1 ./vendor/knative.dev/pkg 2>/dev/null || echo "${REPO_ROOT_DIR}")}
+ 
+-chmod +x ${CODEGEN_PKG}/generate-groups.sh
+-chmod +x ${KNATIVE_CODEGEN_PKG}/hack/generate-knative.sh
++[ -x ${CODEGEN_PKG}/generate-groups.sh ] || chmod +x ${CODEGEN_PKG}/generate-groups.sh
++[ -x ${KNATIVE_CODEGEN_PKG}/hack/generate-knative.sh ] || chmod +x ${KNATIVE_CODEGEN_PKG}/hack/generate-knative.sh
diff --git a/openshift/release/generate-release.sh b/openshift/release/generate-release.sh
index 40d14fc4b1f..3b1cde5f15f 100755
--- a/openshift/release/generate-release.sh
+++ b/openshift/release/generate-release.sh
@@ -14,6 +14,7 @@ echo "Release: $release"
 "${root_dir}"/hack/update-codegen.sh
 git apply "${root_dir}"/openshift/patches/018-rekt-test-override-kopublish.patch
 git apply "${root_dir}"/openshift/patches/020-mutemetrics.patch
+git apply "${root_dir}"/openshift/patches/027-chmod-codegen.patch
 
 ./openshift/generate.sh
 
diff --git a/vendor/knative.dev/hack/codegen-library.sh b/vendor/knative.dev/hack/codegen-library.sh
index d9cf1ce7eaa..0f21d457efd 100644
--- a/vendor/knative.dev/hack/codegen-library.sh
+++ b/vendor/knative.dev/hack/codegen-library.sh
@@ -31,5 +31,5 @@ export GOBIN=${GOPATH}/bin # Set GOBIN explicitly as deepcopy-gen is installed b
 export CODEGEN_PKG=${CODEGEN_PKG:-$(cd ${REPO_ROOT_DIR}; ls -d -1 ./vendor/k8s.io/code-generator 2>/dev/null || echo ../code-generator)}
 export KNATIVE_CODEGEN_PKG=${KNATIVE_CODEGEN_PKG:-$(cd ${REPO_ROOT_DIR}; ls -d -1 ./vendor/knative.dev/pkg 2>/dev/null || echo "${REPO_ROOT_DIR}")}
 
-chmod +x ${CODEGEN_PKG}/generate-groups.sh
-chmod +x ${KNATIVE_CODEGEN_PKG}/hack/generate-knative.sh
+[ -x ${CODEGEN_PKG}/generate-groups.sh ] || chmod +x ${CODEGEN_PKG}/generate-groups.sh
+[ -x ${KNATIVE_CODEGEN_PKG}/hack/generate-knative.sh ] || chmod +x ${KNATIVE_CODEGEN_PKG}/hack/generate-knative.sh