diff --git a/src/Notify.Functions/Notify.Functions.csproj b/src/Notify.Functions/Notify.Functions.csproj
index 8dd866c..4889388 100644
--- a/src/Notify.Functions/Notify.Functions.csproj
+++ b/src/Notify.Functions/Notify.Functions.csproj
@@ -42,8 +42,8 @@
     <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="10.0.8" />
     <!-- Sign-in-with-Apple JWT validation. Microsoft.IdentityModel.Tokens comes
          in transitively but pin it explicitly for clarity. -->
-    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.18.0" />
-    <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="8.18.0" />
+    <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.19.1" />
+    <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="8.19.1" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="10.0.8" />
   </ItemGroup>