diff --git a/.gitignore b/.gitignore
index 9b18e739..98b2c46c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@ cmake_uninstall.cmake
 Makefile
 CTestTestfile.cmake
 CMakeFiles/
+CMakeLists.txt.user*
 *.so
 *.so.*
 *.dylib
@@ -50,6 +51,7 @@ taglib.xcodeproj
 CMakeScripts
 /.clang-format
 /compile_commands.json
+/build/
 .clangd
 .cache
 .idea
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 06a7c2fa..832af866 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -93,7 +93,7 @@ endif()
 # 3. If any interfaces have been added since the last public release, then increment age.
 # 4. If any interfaces have been removed since the last public release, then set age to 0.
 set(TAGLIB_SOVERSION_CURRENT  20)
-set(TAGLIB_SOVERSION_REVISION 0)
+set(TAGLIB_SOVERSION_REVISION 1)
 set(TAGLIB_SOVERSION_AGE      19)
 
 math(EXPR TAGLIB_SOVERSION_MAJOR "${TAGLIB_SOVERSION_CURRENT} - ${TAGLIB_SOVERSION_AGE}")
diff --git a/NEWS b/NEWS
index c148b96d..62710213 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,15 @@
+TagLib 1.13.1 (Jul 1, 2023)
+===========================
+
+ * Fixed parsing of TXXX frames without description.
+ * Detect MP4 atoms with invalid length or type.
+ * Do not miss ID3v2 frames when an extended header is present.
+ * Use property "DISCSUBTITLE" for ID3v2 "TSST" frame.
+ * Build system improvements: Use absolute path for macOS dylib install name,
+   support --define-prefix when using pkg-config, fixed minimum required
+   CppUnit version.
+ * Code clean up using clang-tidy.
+
 TagLib 1.13 (Oct 27, 2022)
 ==========================
 
diff --git a/taglib/toolkit/taglib.h b/taglib/toolkit/taglib.h
index 64ccf0a8..b754b263 100644
--- a/taglib/toolkit/taglib.h
+++ b/taglib/toolkit/taglib.h
@@ -30,7 +30,7 @@
 
 #define TAGLIB_MAJOR_VERSION 1
 #define TAGLIB_MINOR_VERSION 13
-#define TAGLIB_PATCH_VERSION 0
+#define TAGLIB_PATCH_VERSION 1
 
 #if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 1)) || defined(__clang__)
 #define TAGLIB_IGNORE_MISSING_DESTRUCTOR _Pragma("GCC diagnostic ignored \"-Wnon-virtual-dtor\"")