diff --git a/ci/requirements-2.7.txt b/ci/requirements-2.7.txt
index c39f5301c5d39..34b48e1bd7802 100644
--- a/ci/requirements-2.7.txt
+++ b/ci/requirements-2.7.txt
@@ -6,7 +6,7 @@ cython==0.19.1
 bottleneck==0.6.0
 numexpr==2.1
 tables==2.3.1
-matplotlib==1.2.1
+matplotlib==1.1.1
 openpyxl==1.6.2
 xlrd==0.9.2
 patsy==0.1.0