diff --git a/Makefile b/Makefile
index 60cb27abde..2a45b8bfd4 100644
--- a/Makefile
+++ b/Makefile
@@ -53,7 +53,6 @@ slow_tests_deepspeed: test_installs
 	python -m pytest tests/test_examples.py -v -s -k "deepspeed"
 
 slow_tests_diffusers: test_installs
-	python -m pip install git+https://github.com/huggingface/diffusers.git
 	python -m pytest tests/test_diffusers.py -v -s -k "test_no_"
 	python -m pytest tests/test_diffusers.py -v -s -k "test_textual_inversion"