diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index ecf466b..028f0f5 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -15,13 +15,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Install libpoppler-glib-dev
-      run: sudo apt-get update && sudo apt-get install libpoppler-glib-dev
+    - uses: actions/checkout@v4
+    - name: Install libpoppler-glib-dev libcairo-dev
+      run: sudo apt-get update && sudo apt-get install libpoppler-glib-dev libcairo-dev
     - name: Build
-      run: cargo build --verbose
+      run: cargo build --verbose --all-features
     - name: Run tests
-      run: cargo test --verbose
+      run: cargo test --verbose --all-features
     - name: Publish to Cargo Registry
       if: github.ref == 'refs/heads/master'
       env:
diff --git a/.gitignore b/.gitignore
index 7a5a1ea..bd85949 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,5 @@
 .idea/
 Cargo.lock
 output.pdf
-out.png
+out*.png
 *.swp
diff --git a/Cargo.toml b/Cargo.toml
index 55597b2..f691736 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,6 +14,6 @@ edition = "2018"
 render = ["dep:cairo-rs"]
 
 [dependencies]
-cairo-rs = { version = "0.18.5", features = ["png", "pdf"], optional = true }
-glib = "0.18.5"
-gobject-sys = "0.15"
+cairo-rs = { version = "0.20.5", features = ["png", "pdf"], optional = true }
+glib = "0.20.6"
+gobject-sys = "0.20"
diff --git a/src/lib.rs b/src/lib.rs
index fda5319..175c6f3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -341,37 +341,40 @@ mod tests {
 
         for (index, p) in doc.pages().enumerate() {
             let (w, h) = p.get_size();
-            assert!(w == src_w);
-            assert!(h == src_h);
+            assert_eq!(w, src_w);
+            assert_eq!(h, src_h);
 
             println!("page {}/{} -- {}x{}", index + 1, total, w, h);
             count += 1;
         }
 
-        assert!(count == 1);
+        assert_eq!(count, 1);
 
         #[cfg(feature = "render")]
-        let count = 0;
+        let mut count = 0;
 
         #[cfg(feature = "render")]
         for (index, p) in doc.pages().enumerate() {
             let (w, h) = p.get_size();
 
-            assert!(w == src_w);
-            assert!(h == src_h);
+            assert_eq!(w, src_w);
+            assert_eq!(h, src_h);
 
-            let surface = ImageSurface::create(Format::ARgb32, w as i32, h as i32).unwrap();
+            let surface = ImageSurface::create(Format::ARgb32, w as i32, h as i32).expect("failed to create image surface");
+            let context = Context::new(&surface).expect("failed to create cairo context");
             (|page: &PopplerPage, ctx: &Context| {
                 ctx.save().unwrap();
                 page.render(ctx);
                 ctx.restore().unwrap();
                 ctx.show_page().unwrap();
-            })(&page, &ctx);
+            })(&p, &context);
             let mut f: File = File::create(format!("out{}.png", index)).unwrap();
             surface.write_to_png(&mut f).expect("Unable to write PNG");
+
+            count += 1;
         }
 
         #[cfg(feature = "render")]
-        assert!(count == 1)
+        assert_eq!(count, 1)
     }
 }