diff --git a/requirements.txt b/requirements.txt
index 599331b..43ec85f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ plaster-pastedeploy==0.7
 pycparser==2.19
 pyramid==1.10.4
 pyramid-multiauth==0.9.0
-pyramid-tm==2.2.1
+pyramid-tm==2.3
 python-dateutil==2.8.0
 repoze.lru==0.7
 requests==2.22.0