diff --git a/CHANGELOG.md b/CHANGELOG.md
index 480f5a34f..7092b033f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@
 
 ### 2.2.0 <small>WIP</small> { id="2.2.0" }
 
+### 2.1.1 <small>May 16, 2024</small> { id="2.1.1" }
+
+- fix: unit tests compilation on gcc-14 fixed
+- fix: explicit `this` parameter support fixed
 
 ### 2.1.0 <small>December 8, 2023</small> { id="2.1.0" }
 
diff --git a/README.md b/README.md
index 6a5c783cc..41c9bed01 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 [![GitHub Workflow Documentation](https://img.shields.io/github/actions/workflow/status/mpusz/mp-units/documentation.yml?branch=master&label=Documentation)](https://github.com/mpusz/mp-units/actions?query=workflow%3ADocumentation+branch%3Amaster)
 
 [![Conan stable](https://img.shields.io/conan/v/mp-units?label=ConanCenter&color=blue)](https://conan.io/center/mp-units)
-[![Conan testing](https://img.shields.io/badge/mpusz.jfrog.io-2.1.0%3Atesting-blue)](https://mpusz.jfrog.io/ui/packages/conan:%2F%2Fmp-units/2.1.0)
+[![Conan testing](https://img.shields.io/badge/mpusz.jfrog.io-2.2.0%3Atesting-blue)](https://mpusz.jfrog.io/ui/packages/conan:%2F%2Fmp-units/2.2.0)
 
 
 # `mp-units` - A Physical Quantities and Units library for C++
diff --git a/docs/getting_started/installation_and_usage.md b/docs/getting_started/installation_and_usage.md
index 93b4faac9..21cd90122 100644
--- a/docs/getting_started/installation_and_usage.md
+++ b/docs/getting_started/installation_and_usage.md
@@ -341,7 +341,7 @@ with the following differences:
 
     ```ini title="conanfile.txt" hl_lines="2"
     [requires]
-    mp-units/2.1.0@mpusz/testing
+    mp-units/2.1.1@mpusz/testing
 
     [layout]
     cmake_layout
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4c7027a46..28afc04a8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -21,7 +21,7 @@
 # SOFTWARE.
 
 cmake_minimum_required(VERSION 3.19)
-project(mp-units VERSION 2.1.0 LANGUAGES CXX)
+project(mp-units VERSION 2.1.1 LANGUAGES CXX)
 
 set(projectPrefix MP_UNITS_)