diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 56a4b4e..dd627ff 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,16 +6,16 @@ jobs:
     name: "Compile & Lint"
     runs-on: "ubuntu-latest"
     steps:
+    - uses: actions/checkout@v1
     - name: Setup elixir
       uses: erlef/setup-beam@v1
       with:
-        otp-version: 24.3.3
-        elixir-version: 1.16.3
+        version-file: ".tool-versions"
+        version-type: strict
 
-    - uses: actions/checkout@v1
     - run: mix deps.get
 
-    - uses: actions/cache@v2
+    - uses: actions/cache@v3
       id: mix-cache
       with:
         path: |
diff --git a/.tool-versions b/.tool-versions
index 90399a1..1c7ba9e 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-erlang 24.3.3 24.3.4.14 24.3.4.17 system
-elixir 1.16.3-otp-24
+erlang 26.2.5.5 system
+elixir 1.19.1-otp-26
diff --git a/lib/desktop/window.ex b/lib/desktop/window.ex
index 2b5e20c..6edfacf 100644
--- a/lib/desktop/window.ex
+++ b/lib/desktop/window.ex
@@ -601,7 +601,7 @@ defmodule Desktop.Window do
     {:noreply, ui}
   end
 
-  def handle_cast(:rebuild_webview, ui) do
+  def handle_cast(:rebuild_webview, ui = %Window{}) do
     {:noreply, %Window{ui | webview: Fallback.webview_rebuild(ui)}}
   end
 
diff --git a/lib/desktop/wx.ex b/lib/desktop/wx.ex
index db6fbf0..36079e9 100644
--- a/lib/desktop/wx.ex
+++ b/lib/desktop/wx.ex
@@ -1,4 +1,3 @@
-# TODO: less stringy metaprogramming
 defmodule Desktop.Wx do
   @moduledoc """
   Elixir version of the constants found in the wx.hrl file, reduced to what is needed in this sample only.