diff --git a/dotfiles/zshrc b/dotfiles/zshrc
index b10a9ce..326b230 100644
--- a/dotfiles/zshrc
+++ b/dotfiles/zshrc
@@ -47,6 +47,8 @@ if [[ "$OSTYPE" =~ ^linux.*$ ]]; then
     export SDL_VIDEODRIVER=wayland
     # Signal to xdg-desktop-portal that we're on Sway
     export XDG_CURRENT_DESKTOP=sway
+    # 2022-12-26: use Vulkan renderer in Sway
+    export WLR_RENDERER=vulkan
     {%@@ endif @@%}
 fi