diff --git a/configure.ac b/configure.ac
index f6aff3c3..88aca89a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,7 +26,7 @@ AC_PREREQ(2.61)
 
 # [LZMA] instead of [LZMA utils] since I prefer to have lzma-version.tar.gz
 # instead of lzma-utils-version.tar.gz.
-AC_INIT([LZMA], [4.999.5alpha], [lasse.collin@tukaani.org])
+AC_INIT([LZMA], [4.999.6alpha], [lasse.collin@tukaani.org])
 
 AC_CONFIG_SRCDIR([src/liblzma/common/common.h])
 AC_CONFIG_HEADER([config.h])
diff --git a/src/liblzma/api/lzma/version.h b/src/liblzma/api/lzma/version.h
index 811f93e0..a296f450 100644
--- a/src/liblzma/api/lzma/version.h
+++ b/src/liblzma/api/lzma/version.h
@@ -35,7 +35,7 @@
  * \note        The version number of LZMA Utils (and thus liblzma)
  *              has nothing to with the version number of LZMA SDK.
  */
-#define LZMA_VERSION UINT32_C(49990050)
+#define LZMA_VERSION UINT32_C(49990060)
 
 
 /**