diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index aa420589a79406c7544f5edcea3874ba29475e7f..59877cae1d7517d041ab799c064d89b3c7d3ccb5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -82,7 +82,7 @@ Python 3.7 Titan X:
     reports:
       junit: test/pytest.xml
 
-Python 3.5 Conda:
+Python 3.6 Conda:
   script:
   # Disable caching to ensure SymEngine code generation is exercised.
   - export SUMPY_NO_CACHE=1
diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index b2b8b1b47c08a0c809a666abce034ade305e1278..a696dc8de72fdf5d00e90ea9a326efdc3c2d019b 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=3.6
 - symengine=0.3.0
 - python-symengine=0.3.0
 # things not in here: loopy boxtree pymbolic pyfmmlib