diff --git a/python/src/com/jetbrains/python/debugger/PyConcurrencyService.java b/python/src/com/jetbrains/python/debugger/PyConcurrencyService.java
index 5a14d29ca85a..1105f1ac9ea5 100644
--- a/python/src/com/jetbrains/python/debugger/PyConcurrencyService.java
+++ b/python/src/com/jetbrains/python/debugger/PyConcurrencyService.java
@@ -13,4 +13,8 @@ public abstract class PyConcurrencyService {
   }
 
   public abstract void recordEvent(XDebugSession session, PyConcurrencyEvent event, boolean isAsyncIo);
+
+  public abstract void initSession(XDebugSession session);
+
+  public abstract void removeSession(XDebugSession session);
 }