diff --git a/glob/manager_core.py b/glob/manager_core.py
index c77da09e..5781d0df 100644
--- a/glob/manager_core.py
+++ b/glob/manager_core.py
@@ -41,7 +41,7 @@ import manager_downloader
 from node_package import InstalledNodePackage
 
 
-version_code = [3, 6, 4]
+version_code = [3, 6, 5]
 version_str = f"V{version_code[0]}.{version_code[1]}" + (f'.{version_code[2]}' if len(version_code) > 2 else '')
 
 
diff --git a/prestartup_script.py b/prestartup_script.py
index 9c8d63c2..731ff004 100644
--- a/prestartup_script.py
+++ b/prestartup_script.py
@@ -17,9 +17,19 @@ import security_check
 import manager_util
 import cm_global
 import manager_downloader
-from datetime import datetime
 import folder_paths
 
+try:
+    from datetime import datetime
+    def current_timestamp():
+        return datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
+except:
+    import time
+    import datetime
+    logging.error(f"[ComfyUI-Manager] fallback timestamp mode\n                  datetime module is invalid: '{datetime.__file__}'")
+    def current_timestamp():
+        return str(time.time()).split('.')[0]
+
 security_check.security_check()
 
 cm_global.pip_blacklist = ['torch', 'torchsde', 'torchvision']
@@ -235,7 +245,7 @@ try:
 
         def sync_write(self, message, file_only=False):
             with log_lock:
-                timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
+                timestamp = current_timestamp()
                 if self.last_char != '\n':
                     log_file.write(message)
                 else:
@@ -339,7 +349,7 @@ except:
     print("## [ERROR] ComfyUI-Manager: GitPython package seems to be installed, but failed to load somehow. Make sure you have a working git client installed")
 
 
-print("** ComfyUI startup time:", datetime.now())
+print("** ComfyUI startup time:", current_timestamp())
 print("** Platform:", platform.system())
 print("** Python version:", sys.version)
 print("** Python executable:", sys.executable)
diff --git a/pyproject.toml b/pyproject.toml
index 76d916b8..73280443 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "comfyui-manager"
 description = "ComfyUI-Manager provides features to install and manage custom nodes for ComfyUI, as well as various functionalities to assist with ComfyUI."
-version = "3.6.4"
+version = "3.6.5"
 license = { file = "LICENSE.txt" }
 dependencies = ["GitPython", "PyGithub", "matrix-client==0.4.0", "transformers", "huggingface-hub>0.20", "typer", "rich", "typing-extensions"]