diff --git a/src/flatcollections-array/FlatArray/FlatArray.csproj b/src/flatcollections-array/FlatArray/FlatArray.csproj
index e684836..625361a 100644
--- a/src/flatcollections-array/FlatArray/FlatArray.csproj
+++ b/src/flatcollections-array/FlatArray/FlatArray.csproj
@@ -18,7 +18,7 @@
     <Description>PrimeFuncPack Core.FlatArray is a core library for .NET consisting of immutable FlatArray targeted for use in functional programming.</Description>
     <RootNamespace>System</RootNamespace>
     <AssemblyName>PrimeFuncPack.Core.FlatArray</AssemblyName>
-    <Version>1.4.0-rc.2</Version>
+    <Version>1.4.0</Version>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/flatcollections/FlatCollections/FlatCollections.csproj b/src/flatcollections/FlatCollections/FlatCollections.csproj
index d495732..c689652 100644
--- a/src/flatcollections/FlatCollections/FlatCollections.csproj
+++ b/src/flatcollections/FlatCollections/FlatCollections.csproj
@@ -18,7 +18,7 @@
     <Description>PrimeFuncPack Core.FlatCollections is a set of immutable Flat collections for .NET designed for developing business applications based on functional programming.</Description>
     <RootNamespace>System</RootNamespace>
     <AssemblyName>PrimeFuncPack.Core.FlatCollections</AssemblyName>
-    <Version>1.4.0-rc.2</Version>
+    <Version>1.4.0</Version>
   </PropertyGroup>
 
   <ItemGroup>
@@ -33,7 +33,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="PrimeFuncPack.Core.FlatArray" Version="1.4.0-rc.2" />
+    <PackageReference Include="PrimeFuncPack.Core.FlatArray" Version="1.4.0" />
   </ItemGroup>
 
 </Project>