diff --git a/requirements.txt b/requirements.txt
index b88ab2b..cde88a0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,8 @@
-Django==1.4
+Django>=1.4,<1.5
+GitPython>=0.3.7
 Jinja2==2.7.3
 MarkupSafe==0.23
-Pillow==2.4.0
+Pillow>=2.4.0
 South==0.8.4
 Unidecode==0.04.16
 argparse==1.2.1
@@ -9,7 +10,7 @@ awesome-slugify==1.5
 django-cors-headers==0.12
 django-nvd3==0.7.4
 django-registration==0.8
-django-reversion==1.6.0
+django-reversion==1.6.6
 django-reversion-compare==0.3.5
 django-simple-captcha==0.4.2
 djangorestframework==2.3.14