diff --git a/configure.ac b/configure.ac
index 79e6f7e..b7bb525 100644
--- a/configure.ac
+++ b/configure.ac
@@ -31,7 +31,7 @@ AC_PREREQ(2.61)
 
 dnl Initialise automake with the package name, version and
 dnl bug-reporting address.
-AC_INIT([ipc3270], [5.2], [perry.werneck@gmail.com])
+AC_INIT([ipc3270], [5.1], [perry.werneck@gmail.com])
 
 dnl Place auxilliary scripts here.
 AC_CONFIG_AUX_DIR([scripts])
--
libgit2 0.21.2