diff --git a/src/FastFileReadonly/FastFileReadonly.csproj b/src/FastFileReadonly/FastFileReadonly.csproj
index 6526511..07c70d7 100644
--- a/src/FastFileReadonly/FastFileReadonly.csproj
+++ b/src/FastFileReadonly/FastFileReadonly.csproj
@@ -18,7 +18,7 @@
 
   <ItemGroup>
     <PackageReference Include="CommandLineParser" Version="2.9.1" />
-    <PackageReference Include="log4net" Version="3.4.0" />
+    <PackageReference Include="log4net" Version="3.5.0" />
   </ItemGroup>
 
   <ItemGroup>