diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 300c0a7eefb..237336de7c8 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,7 @@
+2004-10-17  Matthias Klose  <doko@debian.org>
+
+	* gnatvsn.ads: Set gnat library version to 4.0.
+
 2004-10-05  Vincent Celier  <celier@gnat.com>
 
         * mlib-tgt.ads: (Build_Dynamic_Library): New parameter Options_2
diff --git a/gcc/ada/gnatvsn.ads b/gcc/ada/gnatvsn.ads
index a00e185f5fc..a7083ad583b 100644
--- a/gcc/ada/gnatvsn.ads
+++ b/gcc/ada/gnatvsn.ads
@@ -74,7 +74,7 @@ package Gnatvsn is
    --  value should never be decreased in the future, but it would be
    --  OK to increase it if absolutely necessary.
 
-   Library_Version : constant String := "3.5";
+   Library_Version : constant String := "4.0";
    --  Library version. This value must be updated whenever any change to the
    --  compiler affects the library formats in such a way as to obsolete
    --  previously compiled library modules.