diff --git a/spack.yaml b/spack.yaml
index 8bcd7a1..431de7e 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -1,7 +1,7 @@
 spack:
   view: /opt/view
   specs:
-    - diffutils@3.9
+    - diffutils@3.8
     - esmf@8.4%intel
 
   config: