version 5.3.12 (release candidate) (#548)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41af366..3ce12b1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,7 @@
 project(simdutf
   DESCRIPTION "Fast Unicode validation, transcoding and processing"
   LANGUAGES CXX
-  VERSION 5.3.11
+  VERSION 5.3.12
 )
 
 include (TestBigEndian)
diff --git a/Doxyfile b/Doxyfile
index f658ab0..677fd22 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -38,7 +38,7 @@
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = "5.3.11"
+PROJECT_NUMBER         = "5.3.12"
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/README.md b/README.md
index 18a4d80..3760cf2 100644
--- a/README.md
+++ b/README.md
@@ -143,7 +143,7 @@
 
 1. Pull the library in a directory
    ```
-   wget https://github.com/simdutf/simdutf/releases/download/v5.3.11/singleheader.zip
+   wget https://github.com/simdutf/simdutf/releases/download/v5.3.12/singleheader.zip
    unzip singleheader.zip
    ```
 2. Compile
@@ -201,7 +201,7 @@
 You can create a single-header version of the library where
 all of the code is put into two files (`simdutf.h` and `simdutf.cpp`).
 We publish a zip archive containing these files, e.g., see
-https://github.com/simdutf/simdutf/releases/download/v5.3.11/singleheader.zip
+https://github.com/simdutf/simdutf/releases/download/v5.3.12/singleheader.zip
 
 You may generate it on your own using a Python script.
 
diff --git a/include/simdutf/simdutf_version.h b/include/simdutf/simdutf_version.h
index 2b94c10..524924e 100644
--- a/include/simdutf/simdutf_version.h
+++ b/include/simdutf/simdutf_version.h
@@ -4,7 +4,7 @@
 #define SIMDUTF_SIMDUTF_VERSION_H
 
 /** The version of simdutf being used (major.minor.revision) */
-#define SIMDUTF_VERSION "5.3.11"
+#define SIMDUTF_VERSION "5.3.12"
 
 namespace simdutf {
 enum {
@@ -19,7 +19,7 @@
   /**
    * The revision (major.minor.REVISION) of simdutf being used.
    */
-  SIMDUTF_VERSION_REVISION = 11
+  SIMDUTF_VERSION_REVISION = 12
 };
 } // namespace simdutf