diff --git a/terraform/gcp/modules/gke_cluster/versions.tf b/terraform/gcp/modules/gke_cluster/versions.tf
index 0f124623c..2b22cb95a 100644
--- a/terraform/gcp/modules/gke_cluster/versions.tf
+++ b/terraform/gcp/modules/gke_cluster/versions.tf
@@ -23,7 +23,7 @@ terraform {
       source  = "hashicorp/google"
     }
     google-beta = {
-      version = "5.18.0"
+      version = "5.21.0"
       source  = "hashicorp/google-beta"
     }
     random = {
diff --git a/terraform/gcp/modules/sigstore/versions.tf b/terraform/gcp/modules/sigstore/versions.tf
index e004c361d..4b0a662cf 100644
--- a/terraform/gcp/modules/sigstore/versions.tf
+++ b/terraform/gcp/modules/sigstore/versions.tf
@@ -23,7 +23,7 @@ terraform {
       source  = "hashicorp/google"
     }
     google-beta = {
-      version = "5.18.0"
+      version = "5.21.0"
       source  = "hashicorp/google-beta"
     }
   }