diff --git a/include/etl/version.h b/include/etl/version.h
index 2a62a934..d694487e 100644
--- a/include/etl/version.h
+++ b/include/etl/version.h
@@ -38,7 +38,7 @@ SOFTWARE.
 ///\ingroup utilities
 
 #define ETL_VERSION_MAJOR 20
-#define ETL_VERSION_MINOR 15
+#define ETL_VERSION_MINOR 16
 #define ETL_VERSION_PATCH  1
 #define ETL_VERSION       ETL_STRINGIFY(ETL_VERSION_MAJOR) "." ETL_STRINGIFY(ETL_VERSION_MINOR) "." ETL_STRINGIFY(ETL_VERSION_PATCH)
 #define ETL_VERSION_W     ETL_STRINGIFY(ETL_VERSION_MAJOR) L"." ETL_STRINGIFY(ETL_VERSION_MINOR) L"." ETL_STRINGIFY(ETL_VERSION_PATCH)
diff --git a/library.json b/library.json
index 02e22774..2375b99b 100644
--- a/library.json
+++ b/library.json
@@ -1,6 +1,6 @@
 {
   "name": "ETL Embedded Template Library",
-  "version": "20.15.1",
+  "version": "20.16.1",
   "author s": {
     "name": "John Wellbelove",
     "email": "john.wellbelove@etlcpp.com"
diff --git a/library.properties b/library.properties
index 40a1f420..7e10a585 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=Embedded Template Library ETL
-version=20.15.1
+version=20.16.1
 author= John Wellbelove <john.wellbelove@etlcpp.com>
 maintainer=John Wellbelove <john.wellbelove@etlcpp.com>
 license=MIT
diff --git a/meson.build b/meson.build
index 357b8cd3..89b9af6a 100644
--- a/meson.build
+++ b/meson.build
@@ -8,7 +8,7 @@ project('PROJECT_NAME',
 		'cpp_std=c++17', 'build.cpp_std=c++17',
 	],
 	meson_version: '>=0.54.0',
-	version: '20.15.1'
+	version: '20.16.1'
 )
 
 ######################
diff --git a/support/Release notes.txt b/support/Release notes.txt
index 9b7c05e0..6898696e 100644
--- a/support/Release notes.txt	
+++ b/support/Release notes.txt	
@@ -1,3 +1,7 @@
+===============================================================================
+20.16.1
+Fix for etl::mutex::try_lock() for GCC
+
 ===============================================================================
 20.16.0
 Added C++17 variadic versions of etl::message_router and etl::fsm