diff --git a/requirements.txt b/requirements.txt
index 81a9ad0..b8f0848 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,13 +3,13 @@ Jinja2==2.7.3
 LEPL==5.1.3
 MarkupSafe==0.23
 PasteDeploy==1.5.2
-PyYAML==3.11
+PyYAML==5.4
 Pygments==2.0.2
 Sphinx==1.3.1
 WebOb==1.4.1
 WebTest==2.0.18
 beautifulsoup4==4.3.2
-boto==2.31.1
+boto==2.39.0
 chaussette==1.2
 cornice==1.0.0
 couchdb-schematics==1.1.1
@@ -30,7 +30,7 @@ pytest==2.6.4
 python-coveralls==2.5.0
 pytz==2014.10
 repoze.lru==0.6
-requests==2.7.0
+requests==2.20
 schematics==1.1.1
 setuptools==7.0
 sh==1.11