diff --git a/src/Epub/Epub.csproj b/src/Epub/Epub.csproj
index 70b1c47..2814fea 100644
--- a/src/Epub/Epub.csproj
+++ b/src/Epub/Epub.csproj
@@ -12,7 +12,7 @@
     <PackageReference Include="ISBN" Version="1.4.2" />
     <PackageReference Include="NuGetizer" Version="1.2.1" />
     <PackageReference Include="PolySharp" Version="1.14.1" PrivateAssets="all" />
-    <PackageReference Include="ThisAssembly.Strings" Version="2.1.2" PrivateAssets="all" />
+    <PackageReference Include="ThisAssembly.Strings" Version="2.1.5" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>