diff --git a/.gitignore b/.gitignore
index bccb8f997..1b44bd297 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,7 @@
 .DS_Store
 MANIFEST
 */tmp
-/venv
-/venv3
+/venv*
 *.py[cdo]
 *.swp
 *.swo
diff --git a/dev.sh b/dev.sh
index 0d1a8d98f..111f09bc3 100755
--- a/dev.sh
+++ b/dev.sh
@@ -1,29 +1,16 @@
 #!/bin/sh
 set -e
 
-VENV="./venv"
-VENV3="${VENV}3"
+PYVERSION=$1
+VENV="venv$1"
 
-python -m virtualenv $VENV --always-copy
-. $VENV/bin/activate
-pip install -q -U pip setuptools
-pip install -q -r requirements.txt
+echo "Creating dev environment in $VENV using Python $PYVERSION"
+
+python$PYVERSION -m virtualenv "$VENV" --always-copy
+. "$VENV/bin/activate"
+pip$PYVERSION install -q -U pip setuptools
+pip$PYVERSION install -q -r requirements.txt
 
 echo ""
 echo "* Virtualenv created in $VENV and all dependencies installed."
 echo "* You can now activate the $(python --version) virtualenv with this command: \`. $VENV/bin/activate\`"
-
-if $(python --version 2>&1 | grep -q "Python 2.") && command -v python3 >/dev/null 2>&1; then
-	echo ""
-	echo ""
-	
-  python3 -m virtualenv "$VENV3" --always-copy
-	. "$VENV3/bin/activate"
-	pip install -q -U pip setuptools
-	pip install -q -r requirements.txt
-
-	echo ""
-	echo "* Virtualenv created in $VENV3 and all dependencies installed."
-  echo "* You can now activate the $(python --version) virtualenv with this command: \`. $VENV3/bin/activate\`"
-fi
-
diff --git a/web/README b/web/README
index 63c3e6e06..c8e603791 100644
--- a/web/README
+++ b/web/README
@@ -3,4 +3,4 @@ Starting up
 
 - npm install
 - gulp
-- run mitmweb and open http://localhost:8081/
\ No newline at end of file
+- run mitmweb and open http://localhost:8081/