diff --git a/azure.yaml b/azure.yaml
index 3d61aa2..dd86253 100644
--- a/azure.yaml
+++ b/azure.yaml
@@ -5,7 +5,7 @@ metadata:
     template: container-migration-solution-accelerator@1.0
 
 requiredVersions:
-  azd: '>=1.18.2'
+  azd: '>=1.18.2 != 1.23.9'
 
 hooks:
   postdeploy:
diff --git a/azure_custom.yaml b/azure_custom.yaml
index 8ac9309..3dc0a43 100644
--- a/azure_custom.yaml
+++ b/azure_custom.yaml
@@ -16,7 +16,7 @@ requiredVersions:
   # Require a recent version of azd that supports the packaging
   # functionality used here.  Versions less than 1.17.1 had a bug in
   # remoteBuild.
-  azd: ">=1.18.2"
+  azd: '>=1.18.2 != 1.23.9'
 
 infra:
   parameters: