diff --git a/systems/llnl-sierra/externals/cuda/00-version-10-1-243-packages.yaml b/systems/llnl-sierra/externals/cuda/00-version-10-1-243-packages.yaml
index 409e1b13c..d010cf81d 100644
--- a/systems/llnl-sierra/externals/cuda/00-version-10-1-243-packages.yaml
+++ b/systems/llnl-sierra/externals/cuda/00-version-10-1-243-packages.yaml
@@ -16,7 +16,7 @@ packages:
     buildable: false
   cuda:
     externals:
-    - spec: cuda@10.1.243
+    - spec: cuda@10.1.243+allow-unsupported-compilers
       prefix: /usr/tce/packages/cuda/cuda-10.1.243
     buildable: false
   cub:
diff --git a/systems/llnl-sierra/externals/cuda/01-version-11-8-0-packages.yaml b/systems/llnl-sierra/externals/cuda/01-version-11-8-0-packages.yaml
index ffa6fb680..0311d67fd 100644
--- a/systems/llnl-sierra/externals/cuda/01-version-11-8-0-packages.yaml
+++ b/systems/llnl-sierra/externals/cuda/01-version-11-8-0-packages.yaml
@@ -16,7 +16,7 @@ packages:
     buildable: false
   cuda:
     externals:
-    - spec: cuda@11.8.0
+    - spec: cuda@11.8.0+allow-unsupported-compilers
       prefix: /usr/tce/packages/cuda/cuda-11.8.0
     buildable: false
   cub: