diff --git a/SharpProp.Tests/SharpProp.Tests.csproj b/SharpProp.Tests/SharpProp.Tests.csproj
index 6bb246c..623db61 100644
--- a/SharpProp.Tests/SharpProp.Tests.csproj
+++ b/SharpProp.Tests/SharpProp.Tests.csproj
@@ -8,7 +8,7 @@
         <Nullable>enable</Nullable>
         <PackageLicenseExpression>MIT</PackageLicenseExpression>
         <PackageProjectUrl>https://github.com/portyanikhin/SharpProp</PackageProjectUrl>
-        <PackageVersion>3.1.8</PackageVersion>
+        <PackageVersion>3.1.9</PackageVersion>
         <RepositoryUrl>https://github.com/portyanikhin/SharpProp</RepositoryUrl>
         <TargetFramework>net5.0</TargetFramework>
         <Title>SharpProp.Tests</Title>
diff --git a/SharpProp/SharpProp.csproj b/SharpProp/SharpProp.csproj
index d60083b..e972697 100644
--- a/SharpProp/SharpProp.csproj
+++ b/SharpProp/SharpProp.csproj
@@ -14,9 +14,9 @@
         <PackageLicenseExpression>MIT</PackageLicenseExpression>
         <PackageProjectUrl>https://github.com/portyanikhin/SharpProp</PackageProjectUrl>
         <PackageReadmeFile>README.md</PackageReadmeFile>
-        <PackageReleaseNotes>Bump UnitsNet from 4.107.0 to 4.108.0. Bump UnitsNet.NumberExtensions from 4.107.0 to 4.108.0. README.md update.</PackageReleaseNotes>
+        <PackageReleaseNotes>Documentation update.</PackageReleaseNotes>
         <PackageTags>native cross-platform CoolProp fluids mixtures humid air thermophysical properties thermodynamics</PackageTags>
-        <PackageVersion>3.1.8</PackageVersion>
+        <PackageVersion>3.1.9</PackageVersion>
         <RepositoryUrl>https://github.com/portyanikhin/SharpProp</RepositoryUrl>
         <Summary>A simple, full-featured, lightweight, cross-platform CoolProp wrapper for C#</Summary>
         <TargetFramework>net5.0</TargetFramework>