diff --git a/dev-requirements.txt b/dev-requirements.txt
index d6b937f..ed18fa6 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,3 +1,3 @@
-sphinx>=1.2,<2
-sphinx-rtd-theme>=0.1,<1.0
-sphinxcontrib-httpdomain>=1.2,<2
+sphinx==1.3.5
+sphinx-rtd-theme==0.3.4
+sphinxcontrib-httpdomain==1.4.0