diff --git a/mono-core.spec b/mono-core.spec
index 9ba462c..4164792 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -252,6 +252,7 @@ rm -rf %{buildroot}
 %{_prefix}/lib/mono/2.0/System.Configuration.dll
 %{_prefix}/lib/mono/2.0/System.Core.dll
 %{_prefix}/lib/mono/2.0/System.Drawing.dll
+%{_prefix}/lib/mono/2.0/System.Json.dll
 %{_prefix}/lib/mono/2.0/System.Net.dll
 %{_prefix}/lib/mono/2.0/System.Security.dll
 %{_prefix}/lib/mono/2.0/System.Xml.Linq.dll
@@ -283,7 +284,7 @@ rm -rf %{buildroot}
 %{_prefix}/lib/mono/4.0/System.Core.dll
 %{_prefix}/lib/mono/4.0/System.Drawing.dll
 %{_prefix}/lib/mono/4.0/System.Dynamic.dll
-%{_prefix}/lib/mono/4.0/System.Json.dll
+%{_prefix}/lib/mono/4.0/System.Json.Microsoft.dll
 %{_prefix}/lib/mono/4.0/System.Net.dll
 %{_prefix}/lib/mono/4.0/System.Numerics.dll
 %{_prefix}/lib/mono/4.0/System.Security.dll
@@ -324,7 +325,7 @@ rm -rf %{buildroot}
 %{_prefix}/lib/mono/4.5/System.Core.dll
 %{_prefix}/lib/mono/4.5/System.Drawing.dll
 %{_prefix}/lib/mono/4.5/System.Dynamic.dll
-%{_prefix}/lib/mono/4.5/System.Json.dll
+%{_prefix}/lib/mono/4.5/System.Json.Microsoft.dll
 %{_prefix}/lib/mono/4.5/System.Net.dll
 %{_prefix}/lib/mono/4.5/System.Net.Http.dll
 %{_prefix}/lib/mono/4.5/System.Numerics.dll
@@ -369,6 +370,7 @@ rm -rf %{buildroot}
 %{_prefix}/lib/mono/gac/System.Xml
 %{_prefix}/lib/mono/gac/System.Xml.Linq
 %{_prefix}/lib/mono/gac/System.Json
+%{_prefix}/lib/mono/gac/System.Json.Microsoft
 %{_prefix}/lib/mono/gac/cscompmgd
 %{_prefix}/lib/mono/mono-configuration-crypto