diff --git a/requirements.txt b/requirements.txt
index 59bcf1c6..babeefd1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ Sphinx==1.8.4
 sphinxcontrib-websupport==1.1.0
 toml==0.10.0
 tqdm==4.30.0
-troposphere==2.4.2
+troposphere==2.5.3
 Unidecode==1.0.23
 urllib3==1.24.1
 Werkzeug==0.14.1