diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index 52349fc96dad765ac6ee667d7f8d34ab9fb4c082..e0434a1803073bf6dfa78879021d597e3fdee55c 100644
--- a/.test-conda-env-py3.yml
+++ b/.test-conda-env-py3.yml
@@ -14,6 +14,7 @@ dependencies:
 - python=3
 - symengine=0.3.0
 - python-symengine=0.3.0
+- pyfmmlib
 
 - pip
 - pip: