diff --git a/src/configure.ac b/src/configure.ac
index 73f9e7054..3de45d3d1 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -1,6 +1,6 @@
 dnl Run autoconf to generate configure from this file
 
-AC_INIT([GF],[2.6],[aarne@cs.chalmers.se],[GF])
+AC_INIT([GF],[2.6t],[aarne@cs.chalmers.se],[GF])
 
 AC_PREREQ(2.53)
 
diff --git a/src/gf.spec b/src/gf.spec
index 13c4970e6..f1a566ea2 100644
--- a/src/gf.spec
+++ b/src/gf.spec
@@ -1,5 +1,5 @@
 %define name GF
-%define version 2.6
+%define version 2.6t
 %define release 1
 
 Name: %{name}