diff --git a/.abf.yml b/.abf.yml
index 681f111..602e577 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -1,2 +1,2 @@
 sources:
-  calibre-2.51.0.tar.xz: 0b4d2693d245aef09b11ba528d41625d65c97119
+  calibre-2.52.0.tar.xz: 12fa3b848cda22e357c8eb4bb441b9e1fb67636e
diff --git a/calibre.spec b/calibre.spec
index 1a93126..dbb1922 100644
--- a/calibre.spec
+++ b/calibre.spec
@@ -1,6 +1,6 @@
 Summary:	E-book converter and library management
 Name:		calibre
-Version:	2.51.0
+Version:	2.52.0
 Release:	1
 License:	GPLv3+
 Group:		Office