diff --git a/gfx/layers/PaintThread.cpp b/gfx/layers/PaintThread.cpp
index fa1fc2183620..70322912f065 100644
--- a/gfx/layers/PaintThread.cpp
+++ b/gfx/layers/PaintThread.cpp
@@ -79,7 +79,7 @@ static uint32_t GetPaintThreadStackSize() {
 #else
   // Workaround bug 1578075 by increasing the stack size of paint threads
   if (nsCocoaFeatures::OnCatalinaOrLater()) {
-    static const uint32_t kCatalinaPaintThreadStackSize = 1024 * 1024;
+    static const uint32_t kCatalinaPaintThreadStackSize = 2 * 1024 * 1024;
     static_assert(kCatalinaPaintThreadStackSize >= nsIThreadManager::DEFAULT_STACK_SIZE,
                   "update default stack size of paint "
                   "workers");