diff --git a/python/rapidgzip/CHANGELOG.md b/python/rapidgzip/CHANGELOG.md
index de8a5694..1db84dde 100644
--- a/python/rapidgzip/CHANGELOG.md
+++ b/python/rapidgzip/CHANGELOG.md
@@ -1,4 +1,12 @@
 
+# Version 0.12.1 built on 2024-01-08
+
+## Fixes
+
+ - Fix segmentation fault from rpmalloc because `rpmalloc_thread_initialize` was not called because
+   the `static thread_local` global variable was not initialized at all because it was never used.
+
+
 # Version 0.12.0 built on 2024-01-07
 
 ## Added
diff --git a/python/rapidgzip/setup.cfg b/python/rapidgzip/setup.cfg
index 6de6f3d4..d2cff72f 100644
--- a/python/rapidgzip/setup.cfg
+++ b/python/rapidgzip/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name    = rapidgzip
-version = 0.12.0
+version = 0.12.1
 
 description   = Parallel random access to gzip files
 url           = https://github.com/mxmlnkn/rapidgzip
diff --git a/src/rapidgzip/rapidgzip.hpp b/src/rapidgzip/rapidgzip.hpp
index 339ced82..973122f4 100644
--- a/src/rapidgzip/rapidgzip.hpp
+++ b/src/rapidgzip/rapidgzip.hpp
@@ -12,7 +12,7 @@
 
 #define RAPIDGZIP_VERSION_MAJOR 0
 #define RAPIDGZIP_VERSION_MINOR 12
-#define RAPIDGZIP_VERSION_PATCH 0
+#define RAPIDGZIP_VERSION_PATCH 1
 #define RAPIDGZIP_VERSION_FROM_SEMVER( a, b, c ) ( a * 0x10000 + b * 0x100 + c )
 #define RAPIDGZIP_VERSION \
 RAPIDGZIP_VERSION_FROM_SEMVER( RAPIDGZIP_VERSION_MAJOR, RAPIDGZIP_VERSION_MINOR, RAPIDGZIP_VERSION_PATCH )