diff --git a/src/Styra.Opa.AspNetCore/Styra.Opa.AspNetCore.csproj b/src/Styra.Opa.AspNetCore/Styra.Opa.AspNetCore.csproj
index 8a9d5dd..17e2b63 100644
--- a/src/Styra.Opa.AspNetCore/Styra.Opa.AspNetCore.csproj
+++ b/src/Styra.Opa.AspNetCore/Styra.Opa.AspNetCore.csproj
@@ -26,6 +26,6 @@
     <PackageReference Include="nodatime" Version="3.2.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="9.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="9.0.0" />
-    <PackageReference Include="Styra.Opa" Version="1.3.7" />
+    <PackageReference Include="Styra.Opa" Version="1.4.1" />
   </ItemGroup>
 </Project>
diff --git a/test/Styra.Opa.AspNetCore.Tests/Styra.Opa.AspNetCore.Tests.csproj b/test/Styra.Opa.AspNetCore.Tests/Styra.Opa.AspNetCore.Tests.csproj
index 2f2548c..477a565 100644
--- a/test/Styra.Opa.AspNetCore.Tests/Styra.Opa.AspNetCore.Tests.csproj
+++ b/test/Styra.Opa.AspNetCore.Tests/Styra.Opa.AspNetCore.Tests.csproj
@@ -27,7 +27,7 @@
 
   <!-- OPA API Reference. -->
   <ItemGroup>
-    <PackageReference Include="Styra.Opa" Version="1.3.7" />
+    <PackageReference Include="Styra.Opa" Version="1.4.1" />
   </ItemGroup>
 
   <!-- Ensure our data files are copied next to the test executables. -->