diff --git a/src/Ocelot/Ocelot.csproj b/src/Ocelot/Ocelot.csproj
index d9ebf70e..162b80da 100644
--- a/src/Ocelot/Ocelot.csproj
+++ b/src/Ocelot/Ocelot.csproj
@@ -48,7 +48,7 @@
     <PackageReference Include="CacheManager.Microsoft.Extensions.Logging" Version="0.9.2" />
     <PackageReference Include="Consul" Version="0.7.2.1" />
     <PackageReference Include="Polly" Version="5.0.3" />
-    <PackageReference Include="IdentityServer4" Version="1.0.1" />
+    <PackageReference Include="IdentityServer4" Version="1.5.1" />
     <PackageReference Include="Microsoft.AspNetCore.Cryptography.KeyDerivation" Version="1.1.1" />
   </ItemGroup>
 
diff --git a/test/Ocelot.IntegrationTests/Ocelot.IntegrationTests.csproj b/test/Ocelot.IntegrationTests/Ocelot.IntegrationTests.csproj
index f2bb5354..a6432df0 100644
--- a/test/Ocelot.IntegrationTests/Ocelot.IntegrationTests.csproj
+++ b/test/Ocelot.IntegrationTests/Ocelot.IntegrationTests.csproj
@@ -44,7 +44,7 @@
     <PackageReference Include="Microsoft.DotNet.InternalAbstractions" Version="1.0.0" />
     <PackageReference Include="xunit" Version="2.2.0-beta5-build3474" />
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="1.1.1" />
-    <PackageReference Include="IdentityServer4" Version="1.0.1" />
+    <PackageReference Include="IdentityServer4" Version="1.5.1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
     <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.1.1" />
     <PackageReference Include="Shouldly" Version="2.8.2" />