diff --git a/README b/README
index 0e8f152..fd6d80b 100644
--- a/README
+++ b/README
@@ -7,8 +7,8 @@ calculate-client needs the following library version installed, in order to run:
     Python >= 2.5
     python-ldap >= 2.0.0
     pyxml >= 0.8
-    calculate-lib >= 2.2.24
-    calculate-desktop >= 2.2.24
+    calculate-lib >= 3.1.0_alpha1
+    calculate-desktop >= 3.1.0_alpha1
 
 To install calculate-client, just execute the install script 'setup.py'.
 Example: