diff --git a/ci/requirements-2.7.pip b/ci/requirements-2.7.pip
index d16b932c8be4f..44e1695bf1a7f 100644
--- a/ci/requirements-2.7.pip
+++ b/ci/requirements-2.7.pip
@@ -1,4 +1,4 @@
-blosc
+blosc==1.4.1
 httplib2
 google-api-python-client==1.2
 python-gflags==2.0