diff --git a/Cargo.lock b/Cargo.lock
index 5c4bb19..efb3fa2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -23,6 +23,12 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
+[[package]]
+name = "bytemuck"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9966d2ab714d0f785dbac0a0396251a35280aeb42413281617d0209ab4898435"
+
 [[package]]
 name = "cast"
 version = "0.2.3"
@@ -37,9 +43,6 @@ name = "cc"
 version = "1.0.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "95752358c8f7552394baf48cd82695b345628ad3f170d607de3ca03b8dacca15"
-dependencies = [
- "jobserver",
-]
 
 [[package]]
 name = "cfg-if"
@@ -94,15 +97,6 @@ dependencies = [
  "wasi",
 ]
 
-[[package]]
-name = "jobserver"
-version = "0.1.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c71313ebb9439f74b00d9d2dcec36440beaf57a6aa0623068441dd7cd81a7f2"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -478,14 +472,14 @@ dependencies = [
 
 [[package]]
 name = "rustybuzz"
-version = "0.2.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09e91a1066320c9d45c87f2191f78a4a4402d8cc66b896abd696ec275515c0b8"
+checksum = "44561062e583c4873162861261f16fd1d85fe927c4904d71329a4fe43dc355ef"
 dependencies = [
  "bitflags",
- "cc",
+ "bytemuck",
  "smallvec",
- "ttf-parser 0.8.3",
+ "ttf-parser 0.12.3",
  "unicode-bidi-mirroring",
  "unicode-ccc",
  "unicode-general-category",
@@ -539,9 +533,9 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "smallvec"
-version = "1.5.0"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7acad6f34eb9e8a259d3283d1e8c1d34d7415943d4895f65cc73813c7396fc85"
+checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
 
 [[package]]
 name = "stats_alloc"
@@ -571,9 +565,9 @@ checksum = "3e5d7cd7ab3e47dda6e56542f4bbf3824c15234958c6e1bd6aaa347e93499fdc"
 
 [[package]]
 name = "ttf-parser"
-version = "0.8.3"
+version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7622061403fd00f0820df288e5a580e87d3ce15a1c4313c59fd1ffb77129903f"
+checksum = "7ae2f58a822f08abdaf668897e96a5656fe72f5a9ce66422423e8849384872e6"
 
 [[package]]
 name = "unicode-bidi-mirroring"
@@ -583,15 +577,15 @@ checksum = "56d12260fb92d52f9008be7e4bca09f584780eb2266dc8fecc6a192bec561694"
 
 [[package]]
 name = "unicode-ccc"
-version = "0.1.0"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbf4a1771ba99c4c8f6e5b1a37a208e970e77ed7297e29963dd1a2303601cd33"
+checksum = "cc2520efa644f8268dce4dcd3050eaa7fc044fca03961e9998ac7e2e92b77cf1"
 
 [[package]]
 name = "unicode-general-category"
-version = "0.2.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f9af028e052a610d99e066b33304625dea9613170a2563314490a4e6ec5cf7f"
+checksum = "07547e3ee45e28326cc23faac56d44f58f16ab23e413db526debce3b0bfd2742"
 
 [[package]]
 name = "unicode-script"
diff --git a/Cargo.toml b/Cargo.toml
index 8922747..420c50f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ version = "0.1.0"
 [dependencies]
 minifb = "0.17"
 rusttype = {version = "0.9.2", default-features = false, features = ["libm-math"]}
-rustybuzz = "0.2.0"
+rustybuzz = "0.4.0"
 stats_alloc = "0.1.8"
 
 [profile.release]
diff --git a/src/main.rs b/src/main.rs
index 9a64b92..2edb03d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -113,7 +113,7 @@ fn test_rusthbuzz(font: &[u8], message: &str) {
 
     let reg = Region::new(&GLOBAL);
 
-    let mut buzz_font = rustybuzz::Font::from_slice(font, 0).unwrap();
+    let mut buzz_font = rustybuzz::Face::from_slice(font, 0).unwrap();
     println!("buzz_font: {:#?}", reg.change());
     buzz_font.set_pixels_per_em(Some((196, 196)));
 
@@ -157,7 +157,7 @@ fn test_rusthbuzz(font: &[u8], message: &str) {
             // let codepoint_rs = char::try_from(buzz_info.codepoint).expect("invalid codepoint");
             let font_glyph = rusttype_font.glyph(rusttype::GlyphId(
                 buzz_info
-                    .codepoint
+                    .glyph_id
                     .try_into()
                     .expect("codepoint out of range"),
             ));