diff --git a/doc/APIchanges b/doc/APIchanges
index 1e326cac3f..b2ee01bd4b 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -13,6 +13,10 @@ libavutil:   2011-04-18
 
 API changes, most recent first:
 
+2012-02-29 - xxxxxxx - lavu 51.22.0 - intfloat.h
+  Add a new installed header libavutil/intfloat.h with int/float punning
+  functions.
+
 2012-02-17 - xxxxxxx - lavc 53.35.0
   Add avcodec_is_open() function.
 
diff --git a/libavutil/Makefile b/libavutil/Makefile
index 6896846081..4bbe2575bb 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -17,6 +17,7 @@ HEADERS = adler32.h                                                     \
           fifo.h                                                        \
           file.h                                                        \
           imgutils.h                                                    \
+          intfloat.h                                                    \
           intfloat_readwrite.h                                          \
           intreadwrite.h                                                \
           lfg.h                                                         \
diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index f0be5c110a..0e62b4a13f 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -154,7 +154,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR 51
-#define LIBAVUTIL_VERSION_MINOR 21
+#define LIBAVUTIL_VERSION_MINOR 22
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \