diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index b2b8b1b47c08a0c809a666abce034ade305e1278..f36b1bd480fce01705470ec14179c81f4e747ac9 100644
--- a/.test-conda-env-py3.yml
+++ b/.test-conda-env-py3.yml
@@ -10,7 +10,7 @@ dependencies:
 - pocl
 - islpy
 - pyopencl
-- python=3.5
+- python=3.7
 - symengine=0.3.0
 - python-symengine=0.3.0
 # things not in here: loopy boxtree pymbolic pyfmmlib