diff --git a/spack.yaml b/spack.yaml
index 3271f9e..0721e06 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -26,7 +26,7 @@ spack:
         - '@4.6.1'
     fms:
       require:
-        - '@git.master'
+        - '@git.main'
     openmpi:
       require:
         - '@4.1.7'