diff --git a/overlays/default.nix b/overlays/default.nix
index aeaee72..121aa0a 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -9,5 +9,6 @@ in {
     // import ./nautilus.nix {inherit addPatches prev;}
     // import ./prismlauncher.nix {inherit addPatches prev;}
     // import ./sway.nix {inherit addPatches prev;}
-    // import ./tailscale.nix {inherit addPatches prev;};
+    // import ./tailscale.nix {inherit addPatches prev;}
+    // import ./fcitx5.nix {inherit addPatches prev;};
 }
diff --git a/overlays/fcitx5.nix b/overlays/fcitx5.nix
new file mode 100644
index 0000000..04cf6c0
--- /dev/null
+++ b/overlays/fcitx5.nix
@@ -0,0 +1,15 @@
+{
+  addPatches,
+  prev,
+  ...
+}: {
+  fcitx5 = addPatches prev.fcitx5 [
+    # Breaks typing in Firefox and some GTK apps
+    (prev.fetchpatch {
+      url = "https://github.com/fcitx/fcitx5/commit/b2924bd361680c493463d240a375b3f0948ae48d.patch";
+      hash = "sha256-FMbYu1yYDHQ8ndr6Fa/qLL1EIKSTQJwc1YuUiEDiJjc=";
+      revert = true;
+    })
+  ];
+}
+