diff --git a/.travis.yml b/.travis.yml
index c239c31..2f7028c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,8 @@ python:
   - 3.3
 
 env:
-  - DJANGO=1.4
-  - DJANGO=1.5
+  - DJANGO=1.4.10
+  - DJANGO=1.5.5
   - DJANGO=1.6
 
 matrix:
diff --git a/tox.ini b/tox.ini
index bcea6ba..081b869 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,10 +11,10 @@ commands=
     python runtests.py
 
 [testenv:py27-django-1.4]
-deps=django==1.4
+deps=django==1.4.10
 
 [testenv:py27-django-1.5]
-deps=django==1.5
+deps=django==1.5.5
 
 [testenv:py27-django-1.6]
 deps=django==1.6