diff --git a/gen.sh b/gen.sh
index 8eaac81..75ae894 100755
--- a/gen.sh
+++ b/gen.sh
@@ -1,8 +1,15 @@
 #!/usr/bin/env bash
 
+# Init venv
+echo "Create venv" &&
+cd `dirname $0` &&
+rm -rf ./venv &&
+python3 -m venv venv &&
+source ./venv/bin/activate &&
+
 # Install updates
-pip3 install --upgrade --user pip &&
-pip3 install --upgrade --user pelican markdown htmlmin &&
+pip install --upgrade pip &&
+pip install --upgrade pelican markdown htmlmin &&
 
 # Clean and generate
 (rm -rf output || true) &&
diff --git a/tools/cssfix.py b/tools/cssfix.py
index c987bf9..32df29d 100755
--- a/tools/cssfix.py
+++ b/tools/cssfix.py
@@ -4,7 +4,7 @@ if __name__ == '__main__':
     # Install cssutils
     import subprocess
 
-    subprocess.check_call(("pip", "install", "--upgrade", "--user", "cssutils"))
+    subprocess.check_call(("pip", "install", "--upgrade", "cssutils"))
 
     # Run tool
     import base64