diff --git a/src/liblzma/Makefile.am b/src/liblzma/Makefile.am
index 23d524f0..003076e3 100644
--- a/src/liblzma/Makefile.am
+++ b/src/liblzma/Makefile.am
@@ -24,7 +24,7 @@ liblzma_la_CPPFLAGS = \
 	-I$(top_srcdir)/src/liblzma/simple \
 	-I$(top_srcdir)/src/common \
 	-DTUKLIB_SYMBOL_PREFIX=lzma_
-liblzma_la_LDFLAGS = -no-undefined -version-info 9:5:4
+liblzma_la_LDFLAGS = -no-undefined -version-info 9:6:4
 
 EXTRA_DIST += liblzma_generic.map liblzma_linux.map validate_map.sh
 if COND_SYMVERS_GENERIC
diff --git a/src/liblzma/api/lzma/version.h b/src/liblzma/api/lzma/version.h
index 8dac3829..71bd8087 100644
--- a/src/liblzma/api/lzma/version.h
+++ b/src/liblzma/api/lzma/version.h
@@ -23,7 +23,7 @@
 #define LZMA_VERSION_MINOR 4
 
 /** \brief Patch version number of the liblzma release. */
-#define LZMA_VERSION_PATCH 5
+#define LZMA_VERSION_PATCH 6
 
 /**
  * \brief Version stability marker