diff --git a/update.py b/update.py
index 343a6df..d04b64c 100644
--- a/update.py
+++ b/update.py
@@ -27,6 +27,17 @@ import socket
 import subprocess
 import sys
 
+# Suppress flashing console windows from child processes (powershell/git/pip/tesseract).
+if os.name == "nt":
+    _CREATE_NO_WINDOW = 0x08000000
+    _orig_popen_init = subprocess.Popen.__init__
+
+    def _popen_no_window(self, *a, **k):
+        k["creationflags"] = k.get("creationflags", 0) | _CREATE_NO_WINDOW
+        _orig_popen_init(self, *a, **k)
+
+    subprocess.Popen.__init__ = _popen_no_window
+
 HERE = os.path.dirname(os.path.abspath(__file__))
 WIN = os.name == "nt"
 TASK = "EveWatcher"