diff --git a/.gitignore b/.gitignore
index e4fe5b1e37..f3879dcd85 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,9 +52,10 @@ cmake_install.cmake
 install_manifest.txt
 CTestTestfile.cmake
 
-# Windows
+# Operating system
 Thumbs.db
 ehthumbs.db
+.DS_Store
 
 # macOS
 .DS_Store
diff --git a/BACKERS.md b/BACKERS.md
index 960141998c..d1a9dd8727 100644
--- a/BACKERS.md
+++ b/BACKERS.md
@@ -31,6 +31,7 @@ This is a list of all the people who are contributing financially to Panda3D.  I
 * Gyedo Jeon
 * GameDev JONI
 * Max Rodriguez
+* Jethro Schoppenhorst
 
 ## Backers
 
diff --git a/panda/src/cocoadisplay/cocoaPandaAppDelegate.mm b/panda/src/cocoadisplay/cocoaPandaAppDelegate.mm
index f64b2be56a..8662dc89af 100644
--- a/panda/src/cocoadisplay/cocoaPandaAppDelegate.mm
+++ b/panda/src/cocoadisplay/cocoaPandaAppDelegate.mm
@@ -26,6 +26,11 @@
   return self;
 }
 
+- (BOOL)applicationSupportsSecureRestorableState:(NSApplication *)app {
+  // Squelches an annoying warning.
+  return YES;
+}
+
 - (void)applicationDidFinishLaunching:(NSNotification *)notification {
   // This only seems to work when called here.
   [NSApp activateIgnoringOtherApps:YES];
diff --git a/panda/src/event/pythonTask.cxx b/panda/src/event/pythonTask.cxx
index 7578e0de64..882d98d801 100644
--- a/panda/src/event/pythonTask.cxx
+++ b/panda/src/event/pythonTask.cxx
@@ -617,7 +617,19 @@ do_python_task() {
       Py_DECREF(_generator);
       _generator = nullptr;
 
+#if PY_VERSION_HEX >= 0x030D0000 // Python 3.13
+      // Python 3.13 does not support _PyGen_FetchStopIterationValue anymore.
+      if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
+        PyObject *exc = PyErr_GetRaisedException();
+        result = ((PyStopIterationObject *)exc)->value;
+        if (result == nullptr) {
+          result = Py_None;
+        }
+        Py_INCREF(result);
+        Py_DECREF(exc);
+#else
       if (_PyGen_FetchStopIterationValue(&result) == 0) {
+#endif
         PyErr_Clear();
 
         if (_must_cancel) {