diff --git a/src/obsolete/PrologWorkbench.Core.Specs/packages.config b/src/obsolete/PrologWorkbench.Core.Specs/packages.config
index 653632e..72525a5 100644
--- a/src/obsolete/PrologWorkbench.Core.Specs/packages.config
+++ b/src/obsolete/PrologWorkbench.Core.Specs/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="CommonServiceLocator" version="1.0" targetFramework="net40" />
-  <package id="log4net" version="2.0.0" targetFramework="net40" />
+  <package id="log4net" version="2.0.10" targetFramework="net40" />
   <package id="Machine.Fakes" version="0.6" targetFramework="net40" />
   <package id="Machine.Fakes.RhinoMocks" version="0.6" targetFramework="net40" />
   <package id="Machine.Specifications" version="0.5.9" targetFramework="net40" />