diff --git a/dev-requirements.txt b/dev-requirements.txt
index aa2e474..834a888 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -3,4 +3,4 @@ mock==2.0.0
 nose==1.3.7
 nose-capturestderr==1.2
 nose-exclude==0.5.0
-testfixtures==4.14.3
+testfixtures==5.0.0