diff --git a/src/xRetry/xRetry.nuspec b/src/xRetry/xRetry.nuspec
index a85e14c..41554f7 100644
--- a/src/xRetry/xRetry.nuspec
+++ b/src/xRetry/xRetry.nuspec
@@ -14,7 +14,13 @@
     <readme>docs\README.md</readme>
 
     <dependencies>
-      <dependency id="xunit.core" version="[2.4.0,3.0.0)" />
+      <group targetFramework=".NETStandard2.0">
+        <dependency id="xunit.core" version="[2.4.0,3.0.0)" />
+      </group>
+
+      <group targetFramework=".NETFramework4.5.2">
+        <dependency id="xunit.core" version="[2.4.0,3.0.0)" />
+      </group>      
     </dependencies>
   </metadata>