diff --git a/.github/workflows/appimage.yml b/.github/workflows/appimage.yml
index 7707fb8..93e2c6b 100644
--- a/.github/workflows/appimage.yml
+++ b/.github/workflows/appimage.yml
@@ -10,7 +10,7 @@ permissions:
 
 jobs:
   build:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     container:
       image: debian:13
 
@@ -33,9 +33,7 @@ jobs:
             wget unzip file libfuse2 curl git glslc libdrm-dev sudo gh
 
       - name: Install Rust
-        run: |
-          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --quiet
-          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
+        uses: dtolnay/rust-toolchain@stable
 
       - name: Build AppImage
         run: bash build-aux/appimage/build-appimage.sh
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..733e84f
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,35 @@
+name: Rust Tests
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: ubuntu:26.04
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install system dependencies
+        run: |
+          apt-get update
+          apt-get install -y \
+            build-essential \
+            curl \
+            pkg-config \
+            libgtk-4-dev \
+            libadwaita-1-dev
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Run tests
+        env:
+          PKG_CONFIG_PATH: /usr/lib/x86_64-linux-gnu/pkgconfig:/usr/share/pkgconfig
+        run: cargo test
diff --git a/src/external/proton.rs b/src/external/proton.rs
index d798e68..7076f42 100644
--- a/src/external/proton.rs
+++ b/src/external/proton.rs
@@ -190,13 +190,19 @@ fn parse_proton_dir_name(name: &str) -> Option<ProtonVersion> {
     // Try to parse "9.0", "8.0-4", "9.0-1" etc.
     let version_part = rest.split('-').next().unwrap_or(rest);
     let mut parts = version_part.split('.');
-    let major: u32 = parts.next()?.trim().parse().ok()?;
-    let minor: u32 = parts
-        .next()
-        .and_then(|s| s.trim().parse().ok())
-        .unwrap_or(0);
 
-    Some(ProtonVersion::Numbered(major, minor))
+    if let Some(major_str) = parts.next() {
+        if let Ok(major) = major_str.trim().parse::<u32>() {
+            let minor: u32 = parts
+                .next()
+                .and_then(|s| s.trim().parse().ok())
+                .unwrap_or(0);
+
+            return Some(ProtonVersion::Numbered(major, minor));
+        }
+    }
+
+    Some(ProtonVersion::Other(name.to_string()))
 }
 
 #[cfg(test)]