Bump the version number to 5.3.1alpha.
diff --git a/src/liblzma/api/lzma/version.h b/src/liblzma/api/lzma/version.h
index 2c26ed2..a6f8ddb 100644
--- a/src/liblzma/api/lzma/version.h
+++ b/src/liblzma/api/lzma/version.h
@@ -22,7 +22,7 @@
  */
 #define LZMA_VERSION_MAJOR 5
 #define LZMA_VERSION_MINOR 3
-#define LZMA_VERSION_PATCH 0
+#define LZMA_VERSION_PATCH 1
 #define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_ALPHA
 
 #ifndef LZMA_VERSION_COMMIT
diff --git a/src/liblzma/liblzma.map b/src/liblzma/liblzma.map
index 930e5e8..bad8633 100644
--- a/src/liblzma/liblzma.map
+++ b/src/liblzma/liblzma.map
@@ -104,7 +104,7 @@
 	lzma_stream_encoder_mt_memusage;
 } XZ_5.0;
 
-XZ_5.3.0alpha {
+XZ_5.3.1alpha {
 global:
 	lzma_file_info_decoder;