diff --git a/.travis.yml b/.travis.yml
index fa70d3d03..21ada7602 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,5 +2,5 @@ language: python
 python:
   - "2.6"
   - "2.7"
-install: "pip install -r requirements.txt --use-mirrors"
+install: "pip install -r requirements.txt"
 script: "fab travis_ci"
diff --git a/requirements.txt b/requirements.txt
index 70c53d1cb..bee236a1d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,6 +10,3 @@ mock==1.0.1
 # Requirements for OpenSlides handbook/documentation in alphabetical order
 Sphinx==1.2b3
 sphinx-bootstrap-theme==0.2.4
-
-# For Python 2.6 support
-argparse==1.2.1
diff --git a/requirements_production.txt b/requirements_production.txt
index f593b43f2..ef1748a7c 100644
--- a/requirements_production.txt
+++ b/requirements_production.txt
@@ -10,3 +10,7 @@ reportlab>=2.7,<2.8
 sockjs-tornado>=1.0,<1.1
 tornado>=3.1,<3.2
 whoosh>=2.5,<2.6
+
+# For Python 2.6 support
+--allow-external argparse
+argparse==1.2.1