diff --git a/Cargo.toml b/Cargo.toml
index b13b6f77..a816e801 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,10 +11,10 @@ env_logger = "0.10.0"
 
 parking_lot = "0.12.1"
 
-fea-rs = "0.12.0"
+fea-rs = "0.13.0"
 font-types = { version = "0.3.3", features = ["serde"] }
 read-fonts = "0.10.0"
-write-fonts = "0.13.0"
+write-fonts = "0.14.0"
 skrifa = "0.9.0"
 
 bitflags = "2.0"
diff --git a/fontbe/src/glyphs.rs b/fontbe/src/glyphs.rs
index dc4c7113..fcdb4b61 100644
--- a/fontbe/src/glyphs.rs
+++ b/fontbe/src/glyphs.rs
@@ -309,11 +309,12 @@ impl Work<Context, AnyWorkId, Error> for GlyphWork {
                     .glyphs
                     .set_unconditionally(Glyph::new_simple(name.clone(), base_glyph.clone()));
 
-                let mut contour_end = 0;
+                let mut num_points = 0;
                 let mut contour_ends = Vec::with_capacity(base_glyph.contours().len());
                 for contour in base_glyph.contours() {
-                    contour_end += contour.len();
-                    contour_ends.push(contour_end);
+                    assert!(!contour.is_empty());
+                    num_points += contour.len();
+                    contour_ends.push(num_points - 1);
                 }
                 (
                     name,