diff --git a/requirements.txt b/requirements.txt
index a5ac0a5683..d85a5c87fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 numpy>=1.9.0
-scipy>=0.11
+scipy>=0.14
 networkx>=1.9
 traits>=4.6
-python-dateutil>=1.5
+python-dateutil>=2.2
 nibabel>=2.1.0
 future>=0.16.0
 simplejson>=3.8.0
diff --git a/rtd_requirements.txt b/rtd_requirements.txt
index cebcd8a100..68a366bbdf 100644
--- a/rtd_requirements.txt
+++ b/rtd_requirements.txt
@@ -1,8 +1,8 @@
-numpy>=1.6.2
-scipy>=0.11
+numpy>=1.9.0
+scipy>=0.14
 networkx>=1.9
 traits>=4.6
-python-dateutil>=1.5
+python-dateutil>=2.2
 nibabel>=2.1.0
 future>=0.16.0
 simplejson>=3.8.0