diff --git a/RAMP/module_metadata.py b/RAMP/module_metadata.py
index c77f56d..90d8f5b 100644
--- a/RAMP/module_metadata.py
+++ b/RAMP/module_metadata.py
@@ -87,6 +87,7 @@ def sha256_checksum(filename, block_size=65536):
     "rocky8": "rhel8",
     "almalinux8": "rhel8",
     "oracle8": "rhel8",
+    "rocky9": "rhel9"
 }
 
 def get_curr_os():