diff --git a/tardis_env3.yml b/tardis_env3.yml
index 2c1c23f691d..6a29b708fa9 100644
--- a/tardis_env3.yml
+++ b/tardis_env3.yml
@@ -9,7 +9,7 @@ dependencies:
   - numpy=1.15
   - scipy=1.1
   - pandas=0.24
-  - astropy=3.2.1
+  - astropy=3
 
   - numba=0.43
   - numexpr