diff --git a/MiraiNotes.Android/MiraiNotes.Android.csproj b/MiraiNotes.Android/MiraiNotes.Android.csproj
index 77843ec0..4a426631 100644
--- a/MiraiNotes.Android/MiraiNotes.Android.csproj
+++ b/MiraiNotes.Android/MiraiNotes.Android.csproj
@@ -322,7 +322,7 @@
       <Version>1.2.0-beta</Version>
     </PackageReference>
     <PackageReference Include="Serilog.Sinks.File">
-      <Version>4.1.0</Version>
+      <Version>5.0.0</Version>
     </PackageReference>
     <PackageReference Include="Serilog.Sinks.Xamarin">
       <Version>0.2.0.64</Version>
diff --git a/MiraiNotes.UWP/MiraiNotes.UWP.csproj b/MiraiNotes.UWP/MiraiNotes.UWP.csproj
index d21c9f07..88460402 100644
--- a/MiraiNotes.UWP/MiraiNotes.UWP.csproj
+++ b/MiraiNotes.UWP/MiraiNotes.UWP.csproj
@@ -390,7 +390,7 @@
       <Version>2.10.0</Version>
     </PackageReference>
     <PackageReference Include="Serilog.Sinks.File">
-      <Version>4.1.0</Version>
+      <Version>5.0.0</Version>
     </PackageReference>
     <PackageReference Include="Template10-Validation">
       <Version>1.0.2</Version>