diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a7a045a..d420767 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -54,13 +54,6 @@ jobs:
         with:
           components: clippy
 
-      # eframe/tray pull in GTK, libxdo and the Ayatana app-indicator at build
-      # time; the runner image doesn't ship their -dev packages.
-      - name: Install system libraries
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libgtk-3-dev libxdo-dev libayatana-appindicator3-dev pkg-config
-
       - name: Cache cargo build
         uses: Swatinem/rust-cache@v2
 
diff --git a/README.md b/README.md
index 2fa66b7..540803d 100644
--- a/README.md
+++ b/README.md
@@ -112,11 +112,11 @@ no Linux release binary.
 Prerequisites:
 
 - A stable Rust toolchain (install via [rustup](https://rustup.rs/)).
-- The GUI's system libraries: GTK 3, libxdo, and the Ayatana app-indicator
-  (`libgtk-3-dev`, `libxdo-dev`, `libayatana-appindicator3-dev` on Debian/Ubuntu;
-  the equivalents on your distro).
 - ARC Raiders on **Steam** (the Epic launcher isn't supported on Linux).
 
+No `-dev` packages are needed: the tray is Windows-only, and the file dialogs
+go through the XDG desktop portal over D-Bus rather than linking GTK.
+
 From the repository root:
 
 ```bash