diff --git a/src/obj.h b/src/obj.h
index 9f2e2efd..bd0b5020 100644
--- a/src/obj.h
+++ b/src/obj.h
@@ -5,7 +5,7 @@
 typedef int64_t _Int;
 typedef double _Float;
 
-#define PK_VERSION "0.3.9"
+#define PK_VERSION "0.4.0"
 
 class CodeObject;
 class BasePointer;
diff --git a/src/vm.h b/src/vm.h
index e534e74b..7eebbdb1 100644
--- a/src/vm.h
+++ b/src/vm.h
@@ -1115,9 +1115,8 @@ class ThreadedVM : public VM {
 
     void __deleteThread(){
         if(_thread != nullptr){
-            if(_state == THREAD_RUNNING || _state == THREAD_SUSPENDED) {
-                keyboardInterrupt();
-                while(_state != THREAD_FINISHED);
+            if(_state == THREAD_RUNNING || _state == THREAD_SUSPENDED){
+                UNREACHABLE();
             }
             _thread->join();
             delete _thread;