diff --git a/pkgs/development/libraries/osip/default.nix b/pkgs/development/libraries/osip/default.nix
index ed854e8a460..8b2dce1d950 100644
--- a/pkgs/development/libraries/osip/default.nix
+++ b/pkgs/development/libraries/osip/default.nix
@@ -1,9 +1,9 @@
 {stdenv, fetchurl}:
 stdenv.mkDerivation rec {
-  version = "5.1.2";
+  version = "5.2.0";
   src = fetchurl {
     url = "mirror://gnu/osip/libosip2-${version}.tar.gz";
-    sha256 = "148j1i0zkwf09qdpk3nc5sssj1dvppw7p0n9rgrg8k56447l1h1b";
+    sha256 = "0xdk3cszkzb8nb757gl47slrr13mf6xz43ab4k343fv8llp8pd2g";
   };
   pname = "libosip2";