diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca95b9b..a96ac3f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fix error spam when the add-on starts due to the thread safety checks added in Godot 4.1.
+
 ## [1.1.1] - 2023-06-15
 
 ### Fixed
diff --git a/addons/debug_menu/debug_menu.gd b/addons/debug_menu/debug_menu.gd
index cccdbe8..972a427 100644
--- a/addons/debug_menu/debug_menu.gd
+++ b/addons/debug_menu/debug_menu.gd
@@ -119,6 +119,14 @@ func _ready() -> void:
 	settings.text = "Loading project information..."
 	thread.start(
 		func():
+			# Disable thread safety checks as they interfere with this add-on.
+			# This only affects this particular thread, not other thread instances in the project.
+			# See <https://github.com/godotengine/godot/pull/78000> for details.
+			# Use a Callable so that this can be ignored on Godot 4.0 without causing a script error
+			# (thread safety checks were added in Godot 4.1).
+			if Engine.get_version_info()["hex"] >= 0x040100:
+				Callable(Thread, "set_thread_safety_checks_enabled").call(false)
+
 			# Enable required time measurements to display CPU/GPU frame time information.
 			# These lines are time-consuming operations, so run them in a separate thread.
 			RenderingServer.viewport_set_measure_render_time(get_viewport().get_viewport_rid(), true)