diff --git a/VERSION b/VERSION
index e7a15ceb..a7ccabdb 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.19
+1.5.20
diff --git a/engines/nmap/Dockerfile b/engines/nmap/Dockerfile
index 96dcd19e..01a3ca80 100644
--- a/engines/nmap/Dockerfile
+++ b/engines/nmap/Dockerfile
@@ -1,5 +1,5 @@
 FROM alpine:3.16.3
-LABEL Name="Nmap\ \(Patrowl engine\)" Version="1.4.46"
+LABEL Name="Nmap\ \(Patrowl engine\)" Version="1.4.47"
 
 # Set the working directory
 RUN mkdir -p /opt/patrowl-engines/nmap
diff --git a/engines/nmap/VERSION b/engines/nmap/VERSION
index 7c3125c0..377504d5 100644
--- a/engines/nmap/VERSION
+++ b/engines/nmap/VERSION
@@ -1 +1 @@
-1.4.46
+1.4.47
diff --git a/engines/nmap/engine-nmap.py b/engines/nmap/engine-nmap.py
index a4841d0a..091f5d8b 100644
--- a/engines/nmap/engine-nmap.py
+++ b/engines/nmap/engine-nmap.py
@@ -365,9 +365,8 @@ def _scan_thread(scan_id):
 
         this.scans[scan_id]["issues"] = deepcopy(issues)
     except Exception as e:
-        print(e)
         app.logger.info(e)
-        traceback.print_exception(*sys.exc_info())
+        # traceback.print_exception(*sys.exc_info())
         this.scans[scan_id]["status"] = "ERROR"
         this.scans[scan_id]["issues_available"] = False
     this.scans[scan_id]["issues_available"] = True
@@ -423,11 +422,9 @@ def stop_scan(scan_id):
         res.update({"status": "error", "reason": f"scan_id '{scan_id}' not found"})
         return jsonify(res)
 
+    # Stop the nmap cmd
     proc = this.scans[scan_id]["proc"]
     if hasattr(proc, "pid"):
-        # his.proc.terminate()
-        # proc.kill()
-        # os.killpg(os.getpgid(proc.pid), signal.SIGTERM)
         if psutil.pid_exists(proc.pid):
             psutil.Process(proc.pid).terminate()
         res.update(
@@ -441,6 +438,10 @@ def stop_scan(scan_id):
             }
         )
 
+    # Stop the thread '_scan_thread'
+    for th in this.scans[scan_id]["threads"]:
+        th.join()
+
     this.scans[scan_id]["status"] = "STOPPED"
     # this.scans[scan_id]["finished_at"] = int(time.time() * 1000)
     return jsonify(res)