jenkins probably unable to connect to github

requirements.txt

@@ -3,5 +3,4 @@ scipy==1.9.1
 joblib==1.2.0
 setuptools==58.0.4
 astropy==5.1
-pycodestyle==2.9.1
-git+https://github.com/executablebooks/sphinx-copybutton.git
\ No newline at end of file
+pycodestyle==2.9.1
\ No newline at end of file