diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ cryptography==2.6.1
 decorator==4.1.2
 deform==2.0.8
 docutils==0.16.0
-dogpile.cache==0.9.2
+dogpile.cache==0.9.0
 formencode==1.2.4
 future==0.14.3
 futures==3.0.2