diff --git a/requirements.txt b/requirements.txt
index a0061248..fdb1f609 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 matplotlib>=1.3.1
 numpy>=1.11
-scipy>=0.9.0
+scipy>=0.10.0
 six>=1.7.3
 networkx>=1.8
 pillow>=2.1.0
diff --git a/tools/appveyor/requirements.txt b/tools/appveyor/requirements.txt
index f60a8b23..ec9a6f02 100644
--- a/tools/appveyor/requirements.txt
+++ b/tools/appveyor/requirements.txt
@@ -8,7 +8,7 @@
 # fix the versions of binary packages to force the use of the whl
 # of the rackspace folder instead of trying to install from PyPI
 # wheels are preferred for a given version
-numpy==1.8.1
+numpy>=1.11
 scipy==0.14.0
 cython>=0.21
 matplotlib==1.4.2