diff --git a/Common.props b/Common.props
new file mode 100644
index 000000000..3d99393e6
--- /dev/null
+++ b/Common.props
@@ -0,0 +1,5 @@
+<Project>
+  <PropertyGroup>
+    <TargetFrameworks>net5.0;netcoreapp3.1</TargetFrameworks>
+  </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/Directory.Build.props b/Directory.Build.props
index 901aaa8b2..18b272bda 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,6 +1,5 @@
 <Project>
   <PropertyGroup>
-    <TargetFrameworks>net5.0;netcoreapp3.1</TargetFrameworks>
     <LangVersion>9.0</LangVersion>
     <Nullable>enable</Nullable>
     <ProductName Condition="'$(ProductName)'==''">Chapter$(ChapterNumber)</ProductName>
diff --git a/EssentialCSharp.sln b/EssentialCSharp.sln
index 89dc495d8..24623147a 100644
--- a/EssentialCSharp.sln
+++ b/EssentialCSharp.sln
@@ -10,6 +10,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		after.EssentialCSharp.sln.targets = after.EssentialCSharp.sln.targets
 		src\Chapter.props = src\Chapter.props
 		src\ChapterTests.props = src\ChapterTests.props
+		Common.props = Common.props
 		Directory.Build.props = Directory.Build.props
 		Directory.Build.targets = Directory.Build.targets
 		README.md = README.md
diff --git a/src/Chapter.props b/src/Chapter.props
index 2a1f19d13..7bff8d14f 100644
--- a/src/Chapter.props
+++ b/src/Chapter.props
@@ -1,4 +1,5 @@
 <Project>
+  <Import Project="../Common.props"/>
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <StartupObject>AddisonWesley.Michaelis.EssentialCSharp.Shared.Program</StartupObject>
diff --git a/src/ChapterTests.props b/src/ChapterTests.props
index 13a7640c6..237b193c1 100644
--- a/src/ChapterTests.props
+++ b/src/ChapterTests.props
@@ -1,4 +1,5 @@
 <Project>
+  <Import Project="../Common.props"/>
   <PropertyGroup>
     <ProductName>$(ProductName).Tests</ProductName>
   </PropertyGroup>