diff --git a/sources/OpenMcdf.Extensions/OpenMcdf.Extensions.csproj b/sources/OpenMcdf.Extensions/OpenMcdf.Extensions.csproj
index 2f04077a..094b1ccf 100644
--- a/sources/OpenMcdf.Extensions/OpenMcdf.Extensions.csproj
+++ b/sources/OpenMcdf.Extensions/OpenMcdf.Extensions.csproj
@@ -3,6 +3,8 @@
      <TargetFrameworks>netstandard2.0;net40</TargetFrameworks>
     <Configurations>Debug;Release</Configurations>
     <SignAssembly>true</SignAssembly>
+    <IncludeSymbols>true</IncludeSymbols>
+    <IncludeSource>true</IncludeSource>
     <AssemblyOriginatorKeyFile>OpenMcdf.snk</AssemblyOriginatorKeyFile>
     <GenerateAssemblyTitleAttribute>false</GenerateAssemblyTitleAttribute>
     <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
diff --git a/sources/OpenMcdf/OpenMcdf.csproj b/sources/OpenMcdf/OpenMcdf.csproj
index ca05733e..8309d8ef 100644
--- a/sources/OpenMcdf/OpenMcdf.csproj
+++ b/sources/OpenMcdf/OpenMcdf.csproj
@@ -3,6 +3,8 @@
     <TargetFrameworks>netstandard2.0;net40</TargetFrameworks>
     <Configurations>Debug;Release</Configurations>
     <SignAssembly>true</SignAssembly>
+    <IncludeSymbols>true</IncludeSymbols>
+    <IncludeSource>true</IncludeSource>
     <AssemblyOriginatorKeyFile>OpenMcdf.snk</AssemblyOriginatorKeyFile>
     <GenerateAssemblyTitleAttribute>false</GenerateAssemblyTitleAttribute>
     <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>