diff --git a/.conda/meta.yaml b/.conda/meta.yaml
index 529ba01..7e7b155 100644
--- a/.conda/meta.yaml
+++ b/.conda/meta.yaml
@@ -17,10 +17,10 @@ build:
 
 requirements:
     host:
-        - python >=3.9
+        - python ==3.9
         - pip
     run:
-        - python >=3.9
+        - python ==3.9
         - payu >=1.0.30
         - netCDF4
         - PyYAML