diff --git a/ArchiSteamFarm/TrimmerRoots.xml b/ArchiSteamFarm/TrimmerRoots.xml
index cb56809e5..0c6f7dc2c 100644
--- a/ArchiSteamFarm/TrimmerRoots.xml
+++ b/ArchiSteamFarm/TrimmerRoots.xml
@@ -11,7 +11,7 @@
 		<type fullname="System.Composition.ExportAttribute" />
 	</assembly>
 
-	<!-- Entries below are needed for our STD plugin -->
+	<!-- Entries below are needed for our officials plugins -->
 	<assembly fullname="System.Linq">
 		<type fullname="System.Linq.Enumerable">
 			<method name="MaxBy" />
@@ -23,4 +23,10 @@
 			<method name="Next" />
 		</type>
 	</assembly>
+
+	<assembly fullname="System.Threading">
+		<type fullname="System.Threading.SemaphoreSlim">
+			<property name="CurrentCount" />
+		</type>
+	</assembly>
 </linker>