diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4397402..6eb95c0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 Change log
 ==========
 
+## v1.12.40 - September 24, 2021
+ * In BundleTransformer.CoffeeScript added support of the CoffeeScript version 2.6.0
+ * In BundleTransformer.Autoprefixer added support of the Autoprefixer version 10.3.5.0
+
 ## v1.12.39 - September 11, 2021
  * In BundleTransformer.ConfigurationIntelliSense updated definitions for configuration settings of TypeScript translator and Closure remote JS minifier
  * In BundleTransformer.TypeScript:
diff --git a/samples/BundleTransformer.Sample.AspNet45.Mvc4/BundleTransformer.Sample.AspNet45.Mvc4.csproj b/samples/BundleTransformer.Sample.AspNet45.Mvc4/BundleTransformer.Sample.AspNet45.Mvc4.csproj
index 23b6104b..9f359dd3 100644
--- a/samples/BundleTransformer.Sample.AspNet45.Mvc4/BundleTransformer.Sample.AspNet45.Mvc4.csproj
+++ b/samples/BundleTransformer.Sample.AspNet45.Mvc4/BundleTransformer.Sample.AspNet45.Mvc4.csproj
@@ -54,12 +54,12 @@
     <Reference Include="JavaScriptEngineSwitcher.Core, Version=3.3.0.0, Culture=neutral, PublicKeyToken=c608b2a8cc9e4472, processorArchitecture=MSIL">
       <HintPath>..\..\packages\JavaScriptEngineSwitcher.Core.3.3.0\lib\net45\JavaScriptEngineSwitcher.Core.dll</HintPath>
     </Reference>
-    <Reference Include="JavaScriptEngineSwitcher.Msie, Version=3.4.3.0, Culture=neutral, PublicKeyToken=c608b2a8cc9e4472, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\JavaScriptEngineSwitcher.Msie.3.4.3\lib\net45\JavaScriptEngineSwitcher.Msie.dll</HintPath>
+    <Reference Include="JavaScriptEngineSwitcher.Msie, Version=3.12.6.0, Culture=neutral, PublicKeyToken=c608b2a8cc9e4472, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\JavaScriptEngineSwitcher.Msie.3.12.6\lib\net45\JavaScriptEngineSwitcher.Msie.dll</HintPath>
     </Reference>
     <Reference Include="Microsoft.CSharp" />
-    <Reference Include="MsieJavaScriptEngine, Version=3.0.7.0, Culture=neutral, PublicKeyToken=a3a2846a37ac0d3e, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\MsieJavaScriptEngine.3.0.7\lib\net45\MsieJavaScriptEngine.dll</HintPath>
+    <Reference Include="MsieJavaScriptEngine, Version=3.0.8.0, Culture=neutral, PublicKeyToken=a3a2846a37ac0d3e, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\MsieJavaScriptEngine.3.0.8\lib\net45\MsieJavaScriptEngine.dll</HintPath>
     </Reference>
     <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\..\packages\Newtonsoft.Json.12.0.2\lib\net40\Newtonsoft.Json.dll</HintPath>
diff --git a/samples/BundleTransformer.Sample.AspNet45.Mvc4/Properties/AssemblyInfo.cs b/samples/BundleTransformer.Sample.AspNet45.Mvc4/Properties/AssemblyInfo.cs
index 0f43c8b4..b1298d3b 100644
--- a/samples/BundleTransformer.Sample.AspNet45.Mvc4/Properties/AssemblyInfo.cs
+++ b/samples/BundleTransformer.Sample.AspNet45.Mvc4/Properties/AssemblyInfo.cs
@@ -13,5 +13,5 @@
 [assembly: ComVisible(false)]
 [assembly: Guid("d858d771-b511-4517-bc9a-6feb6d0c4c3e")]
 
-[assembly: AssemblyVersion("1.12.39.0")]
-[assembly: AssemblyFileVersion("1.12.39.0")]
\ No newline at end of file
+[assembly: AssemblyVersion("1.12.40.0")]
+[assembly: AssemblyFileVersion("1.12.40.0")]
\ No newline at end of file
diff --git a/samples/BundleTransformer.Sample.AspNet45.Mvc4/packages.config b/samples/BundleTransformer.Sample.AspNet45.Mvc4/packages.config
index 00925131..4dbc2735 100644
--- a/samples/BundleTransformer.Sample.AspNet45.Mvc4/packages.config
+++ b/samples/BundleTransformer.Sample.AspNet45.Mvc4/packages.config
@@ -3,7 +3,7 @@
   <package id="AdvancedStringBuilder" version="0.1.0" targetFramework="net45" />
   <package id="Antlr" version="3.4.1.9004" targetFramework="net40" />
   <package id="JavaScriptEngineSwitcher.Core" version="3.3.0" targetFramework="net45" />
-  <package id="JavaScriptEngineSwitcher.Msie" version="3.4.3" targetFramework="net45" />
+  <package id="JavaScriptEngineSwitcher.Msie" version="3.12.6" targetFramework="net45" />
   <package id="jQuery" version="2.2.1" targetFramework="net40" />
   <package id="jQuery.UI.Combined" version="1.11.4" targetFramework="net40" />
   <package id="jQuery.Validation" version="1.14.0" targetFramework="net40" />
@@ -18,7 +18,7 @@
   <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.3" targetFramework="net40" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net40" />
   <package id="Modernizr" version="2.8.3" targetFramework="net40" />
-  <package id="MsieJavaScriptEngine" version="3.0.7" targetFramework="net45" />
+  <package id="MsieJavaScriptEngine" version="3.0.8" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net40" />
   <package id="WebGrease" version="1.6.0" targetFramework="net40" />
 </packages>
\ No newline at end of file
diff --git a/src/BundleTransformer.Autoprefixer/BundleTransformer.Autoprefixer.csproj b/src/BundleTransformer.Autoprefixer/BundleTransformer.Autoprefixer.csproj
index 358ab9c5..5d88c124 100644
--- a/src/BundleTransformer.Autoprefixer/BundleTransformer.Autoprefixer.csproj
+++ b/src/BundleTransformer.Autoprefixer/BundleTransformer.Autoprefixer.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Product>Bundle Transformer: Autoprefixer</Product>
-    <VersionPrefix>1.12.39</VersionPrefix>
+    <VersionPrefix>1.12.40</VersionPrefix>
     <TargetFramework>net40</TargetFramework>
     <OutputType>Library</OutputType>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/src/BundleTransformer.Autoprefixer/readme.txt b/src/BundleTransformer.Autoprefixer/readme.txt
index a6367233..da05a56d 100644
--- a/src/BundleTransformer.Autoprefixer/readme.txt
+++ b/src/BundleTransformer.Autoprefixer/readme.txt
@@ -1,7 +1,7 @@
 
 
    --------------------------------------------------------------------------------
-               README file for Bundle Transformer: Autoprefixer v1.12.39
+               README file for Bundle Transformer: Autoprefixer v1.12.40
 
    --------------------------------------------------------------------------------
 
diff --git a/src/BundleTransformer.CoffeeScript/BundleTransformer.CoffeeScript.csproj b/src/BundleTransformer.CoffeeScript/BundleTransformer.CoffeeScript.csproj
index be95328a..f521afc9 100644
--- a/src/BundleTransformer.CoffeeScript/BundleTransformer.CoffeeScript.csproj
+++ b/src/BundleTransformer.CoffeeScript/BundleTransformer.CoffeeScript.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Product>Bundle Transformer: CoffeeScript</Product>
-    <VersionPrefix>1.12.8</VersionPrefix>
+    <VersionPrefix>1.12.40</VersionPrefix>
     <TargetFramework>net40</TargetFramework>
     <OutputType>Library</OutputType>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
diff --git a/src/BundleTransformer.CoffeeScript/package.json b/src/BundleTransformer.CoffeeScript/package.json
index 87bad0b0..02db53cf 100644
--- a/src/BundleTransformer.CoffeeScript/package.json
+++ b/src/BundleTransformer.CoffeeScript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bundletransformer.coffeescript",
-  "version": "1.11.1",
+  "version": "1.12.40",
   "devDependencies": {
     "babel-cli": "^6.26.0",
     "babel-preset-es2015": "^6.24.1"
diff --git a/src/BundleTransformer.CoffeeScript/readme.txt b/src/BundleTransformer.CoffeeScript/readme.txt
index 2f7c6552..f93774ba 100644
--- a/src/BundleTransformer.CoffeeScript/readme.txt
+++ b/src/BundleTransformer.CoffeeScript/readme.txt
@@ -1,7 +1,7 @@
 
 
    --------------------------------------------------------------------------------
-               README file for Bundle Transformer: CoffeeScript v1.12.8
+               README file for Bundle Transformer: CoffeeScript v1.12.40
 
    --------------------------------------------------------------------------------
 
diff --git a/test/BundleTransformer.Tests/BundleTransformer.Tests.csproj b/test/BundleTransformer.Tests/BundleTransformer.Tests.csproj
index c28e1455..c5685a7a 100644
--- a/test/BundleTransformer.Tests/BundleTransformer.Tests.csproj
+++ b/test/BundleTransformer.Tests/BundleTransformer.Tests.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Product>Bundle Transformer: Tests</Product>
-    <VersionPrefix>1.12.39</VersionPrefix>
+    <VersionPrefix>1.12.40</VersionPrefix>
     <TargetFramework>net452</TargetFramework>
     <OutputType>Library</OutputType>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
@@ -16,7 +16,7 @@
     <Reference Include="System.Web" Pack="false" />
 
     <PackageReference Include="JavaScriptEngineSwitcher.Core" Version="3.3.0" />
-    <PackageReference Include="JavaScriptEngineSwitcher.Msie" Version="3.4.3" />
+    <PackageReference Include="JavaScriptEngineSwitcher.Msie" Version="3.12.6" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
     <PackageReference Include="Moq" Version="4.16.1" />
     <PackageReference Include="xunit" Version="2.4.1" />