diff --git a/CHANGELOG.md b/CHANGELOG.md
index fcc2ae7..e459e9f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 All notable changes to this project will be documented in this file.
 
 
+## 0.5.1 (2022-06017)
+#### Fixed
+- Fix run-time error when compiling as cpp and 32-bit (g++-5 -m32 -fPIC) #85
+- Fix incurrect output number format, remove unnecessary digits (e.g. 2.0e34 -> 2e34).
+
+
 ## 0.5.0 (2022-05-25)
 #### Added
 - Add LibFuzzer support.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 203e295..92f9ceb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@
 # https://github.com/ibireme/yyjson/blob/master/LICENSE
 
 cmake_minimum_required(VERSION 3.5)
-project(yyjson VERSION 0.5.0)
+project(yyjson VERSION 0.5.1)
 
 
 
diff --git a/doc/BuildAndTest.md b/doc/BuildAndTest.md
index f0b61b7..8974513 100644
--- a/doc/BuildAndTest.md
+++ b/doc/BuildAndTest.md
@@ -49,6 +49,8 @@ Supported CMake options:
 - `-DYYJSON_ENABLE_VALGRIND=ON` Enable valgrind memory checker for tests.
 - `-DYYJSON_ENABLE_SANITIZE=ON` Enable sanitizer for tests.
 - `-DYYJSON_ENABLE_FASTMATH=ON` Enable fast-math for tests.
+- `-YYJSON_FORCE_32_BIT=ON` Force 32-bit for tests (gcc/clang/icc).
+
 - `-DYYJSON_DISABLE_READER=ON` Disable JSON reader if you don't need it.
 - `-DYYJSON_DISABLE_WRITER=ON` Disable JSON writer if you don't need it.
 - `-DYYJSON_DISABLE_FAST_FP_CONV=ON` Disable fast floating-pointer conversion.
diff --git a/src/yyjson.h b/src/yyjson.h
index 77bc4bb..35a4594 100644
--- a/src/yyjson.h
+++ b/src/yyjson.h
@@ -409,13 +409,13 @@ extern "C" {
 #define YYJSON_VERSION_MINOR  5
 
 /** The patch version of yyjson. */
-#define YYJSON_VERSION_PATCH  0
+#define YYJSON_VERSION_PATCH  1
 
 /** The version of yyjson in hex: (major << 16) | (minor << 8) | (patch). */
-#define YYJSON_VERSION_HEX    0x000500
+#define YYJSON_VERSION_HEX    0x000501
 
 /** The version string of yyjson. */
-#define YYJSON_VERSION_STRING "0.5.0"
+#define YYJSON_VERSION_STRING "0.5.1"
 
 /** The version of yyjson in hex, same as `YYJSON_VERSION_HEX`. */
 yyjson_api uint32_t yyjson_version(void);