diff --git a/README.md b/README.md
index 3833d11..7a4c2df 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ To install it, run:
 You'll need these to run _Supysonic_:
 
 * Python 2.7 or >= 3.5
-* [Flask](http://flask.pocoo.org/) >= 0.9
+* [Flask](http://flask.pocoo.org/)
 * [PonyORM](https://ponyorm.com/)
 * [Python Imaging Library](https://github.com/python-pillow/Pillow)
 * [requests](http://docs.python-requests.org/)
diff --git a/requirements.txt b/requirements.txt
index df2c04e..7c1623b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
-flask>=0.9
-pony
+flask>=0.11
+pony>=0.7.2
 Pillow
 requests>=1.0.0
-mutagen
-watchdog
+mutagen>=1.33
+watchdog>=0.8.0