use latest releases for django builds

Author: thijstriemstra

tox.ini

@@ -15,41 +15,41 @@ deps = -egit+https://github.com/jbalogh/jingo.git#egg=jingo
 [testenv:py26-1.4]
 basepython = python2.6
 deps =
-    Django==1.4.10
+    Django==1.4.20
     {[testenv]deps}
 
 [testenv:py26-1.5]
 basepython = python2.6
 deps =
-    Django==1.5.5
+    Django==1.5.12
     {[testenv]deps}
 
 [testenv:py26-1.6]
 basepython = python2.6
 deps =
-    Django==1.6
+    Django==1.6.11
     {[testenv]deps}
 
 [testenv:py27-1.4]
 basepython = python2.7
 deps =
-    Django==1.4.10
+    Django==1.4.20
     {[testenv]deps}
 
 [testenv:py27-1.5]
 basepython = python2.7
 deps =
-    Django==1.5.5
+    Django==1.5.12
     {[testenv]deps}
 
 [testenv:py27-1.6]
 basepython = python2.7
 deps =
-    Django==1.6
+    Django==1.6.11
     {[testenv]deps}
 
 [testenv:py27-1.7]
 basepython = python2.7
 deps =
-    Django==1.7.6
+    Django==1.7.7
     {[testenv]deps}