Makefile: avoid offline operations

diff --git a/Makefile b/Makefile
index 0bf1925..871407c 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -85,7 +85,7 @@ build_python_extlib:
 
 deps_python:
        # install or upgrade python requirements
-       pip install --verbose --upgrade --requirement requirements.txt
+       pip install --verbose --requirement requirements.txt
 
 # use pip or distutils?
 #install_python: install_python_with_pip