diff --git a/.github/workflows/bindings.yml b/.github/workflows/bindings.yml
index aaaf5ef..9ea8965 100644
--- a/.github/workflows/bindings.yml
+++ b/.github/workflows/bindings.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Build
       run: cargo build --verbose
     - name: Run tests
diff --git a/.github/workflows/playground.yml b/.github/workflows/playground.yml
index 3f4cb97..c27a18c 100644
--- a/.github/workflows/playground.yml
+++ b/.github/workflows/playground.yml
@@ -12,7 +12,7 @@ jobs:
   deploy-playground:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup wasm-pack
         uses: jetli/wasm-pack-action@v0.4.0
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 31000a2..83d855a 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -11,12 +11,41 @@ env:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+    - name: Setup cache
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/bin/
+          ~/.cargo/registry/index/
+          ~/.cargo/registry/cache/
+          ~/.cargo/git/db/
+          target/
+        key: ${{ runner.os }}-cargo-stable-${{ hashFiles('**/Cargo.lock') }}
     - name: Build
       run: cargo build --verbose
     - name: Run tests
       run: cargo test --verbose
+
+  fuzz:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+          key: ${{ runner.os }}-cargo-nightly-${{ hashFiles('**/Cargo.lock') }}
+      - name: Use nightly toolchain
+        run: rustup default nightly
+      - name: Install cargo fuzz
+        run: cargo fuzz --version || cargo install --locked cargo-fuzz
+      - name: Fuzz parser
+        run: cargo fuzz run --release fuzz_parser -- -max_total_time=120 -jobs=2
diff --git a/.gitignore b/.gitignore
index cbae3ad..1aedeee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 target/
 .DS_Store
 out/
+.idea
diff --git a/Cargo.lock b/Cargo.lock
index 8c3245f..381e433 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -39,6 +39,12 @@ version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "080e9890a082662b09c1ad45f567faeeb47f22b5fb23895fbe1e651e718e25ca"
 
+[[package]]
+name = "arbitrary"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d5a26814d8dcb93b0e5a0ff3c6d80a8843bafb21b39e8e18a6f05471870e110"
+
 [[package]]
 name = "ariadne"
 version = "0.4.0"
@@ -289,6 +295,14 @@ dependencies = [
  "uniffi",
 ]
 
+[[package]]
+name = "cooklang-fuzz"
+version = "0.0.0"
+dependencies = [
+ "cooklang",
+ "libfuzzer-sys",
+]
+
 [[package]]
 name = "cooklang-playground"
 version = "0.1.0"
@@ -608,6 +622,17 @@ version = "0.2.152"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13e3bf6590cbc649f4d1a3eefc9d5d6eb746f5200ffb04e5e142700b8faa56e7"
 
+[[package]]
+name = "libfuzzer-sys"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a96cfd5557eb82f2b83fed4955246c988d331975a002961b07c81584d107e7f7"
+dependencies = [
+ "arbitrary",
+ "cc",
+ "once_cell",
+]
+
 [[package]]
 name = "libgit2-sys"
 version = "0.16.1+1.7.1"
diff --git a/Cargo.toml b/Cargo.toml
index d80d313..013030c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,4 +52,4 @@ name = "convert"
 harness = false
 
 [workspace]
-members = [".", "playground", "bindings"]
+members = [".", "playground", "bindings", "fuzz"]
diff --git a/fuzz/.gitignore b/fuzz/.gitignore
new file mode 100644
index 0000000..1a45eee
--- /dev/null
+++ b/fuzz/.gitignore
@@ -0,0 +1,4 @@
+target
+corpus
+artifacts
+coverage
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
new file mode 100644
index 0000000..01ba44e
--- /dev/null
+++ b/fuzz/Cargo.toml
@@ -0,0 +1,21 @@
+[package]
+name = "cooklang-fuzz"
+version = "0.0.0"
+publish = false
+edition = "2021"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+
+[dependencies.cooklang]
+path = ".."
+
+[[bin]]
+name = "fuzz_parser"
+path = "fuzz_targets/fuzz_parser.rs"
+test = false
+doc = false
+bench = false
diff --git a/fuzz/fuzz_targets/fuzz_parser.rs b/fuzz/fuzz_targets/fuzz_parser.rs
new file mode 100644
index 0000000..05c0f2e
--- /dev/null
+++ b/fuzz/fuzz_targets/fuzz_parser.rs
@@ -0,0 +1,10 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+
+use cooklang::{CooklangParser, Extensions, Converter};
+
+fuzz_target!(|contents: &str| {
+    let parser = CooklangParser::new(Extensions::all(), Converter::default());
+    let _ = parser.parse(&contents);
+});