diff --git a/python27.yaml b/python27.yaml
index 6043002..ffe6649 100644
--- a/python27.yaml
+++ b/python27.yaml
@@ -174,7 +174,7 @@ data:
         ref: fe428e3002127fbbc3d12619403e09f7e4db43a0
       python-backports:
         rationale: Namespace for backported Python features
-        ref: b2cecee7982583fcb9c15f412a77587a13354d82
+        ref: cf94c30f7edfe5aa282b5d0e5c11ffed6f3c1a78
       python-backports-ssl_match_hostname:
         rationale: The ssl.match_hostname() function from Python 3. Dependency of
           urllib3/requests.
@@ -226,7 +226,7 @@ data:
         ref: cdab894d615e058f719b4717c9d553d4d5527c57
       python-psycopg2:
         rationale: Python adapter for the PostgreSQL database
-        ref: 7dbde875188cb7cc38bb9b5c978ddfb3da464b47
+        ref: df457fda4af5ca60cdb2fc9b568c8451ea18ea73
       python-py:
         rationale: Library with cross-python path, ini-parsing, io, code, log facilities
         ref: 3d1d3822ae5c76d11c645b8c8da44d6e293953b5
@@ -259,7 +259,7 @@ data:
       python-urllib3:
         rationale: Python HTTP library with thread-safe connection pooling and file
           post. Dependency of requests.
-        ref: f594b0aa04af42846c0e7f98c7c9a05cd5ebed27
+        ref: a7f48fae269682d695bbb7ef3c58ebc2810eec7d
       python-virtualenv:
         rationale: Tool to create isolated Python environments
         ref: 1148d32218b7ef6802aa6c86dc59bac230cfda48