diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 12cfee33..52db1e8b 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -10,7 +10,7 @@ jobs:
     name: Run Rust benchmark
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: rustup toolchain update nightly && rustup default nightly
       - name: Run benchmark
         run: cargo +nightly bench --features decimal,metadata,serde,debugging | tee output.txt
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bed9d2de..65123a55 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,8 +14,8 @@ jobs:
   msrv:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v1
+      - uses: actions/checkout@v4
+      - uses: actions/cache@v4
         with:
           path: |
             ~/.cargo/bin
@@ -76,7 +76,7 @@ jobs:
       fail-fast: false
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Setup Toolchain
       uses: actions-rs/toolchain@v1
       with:
@@ -101,7 +101,7 @@ jobs:
           #- {os: macos-latest, flags: "--profile macos", experimental: false}
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Setup Toolchain
       uses: actions-rs/toolchain@v1
       with:
@@ -128,7 +128,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Setup Generic Wasm Toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -153,7 +153,7 @@ jobs:
     continue-on-error: true
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Setup Toolchain
       uses: actions-rs/toolchain@v1
       with:
@@ -182,7 +182,7 @@ jobs:
           - {toolchain: stable, os: windows-latest, experimental: false, flags: "--features metadata"}
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
     - name: Setup Toolchain
       uses: actions-rs/toolchain@v1
       with:
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6b751bc8..97a0b118 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -13,7 +13,7 @@ jobs:
   feature_powerset:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@v1
         with:
           toolchain: stable
diff --git a/Cargo.toml b/Cargo.toml
index 18521034..1c86ad08 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,20 +21,20 @@ categories = ["no-std", "embedded", "wasm", "parser-implementations"]
 smallvec = { version = "1.7", default-features = false, features = ["union", "const_new", "const_generics"] }
 ahash = { version = "0.8.2", default-features = false, features = ["compile-time-rng"] }
 num-traits = { version = "0.2", default-features = false }
-bitflags = { version = "1", default-features = false }
+bitflags = { version = "2", default-features = false }
 smartstring = { version = "1", default-features = false }
 rhai_codegen = { version = "1.5.0", path = "codegen", default-features = false }
 
 no-std-compat = { git = "https://gitlab.com/jD91mZM2/no-std-compat", version = "0.4.1", default-features = false, features = ["alloc"], optional = true }
 libm = { version = "0.2", default-features = false, optional = true }
-hashbrown = { version = "0.13", optional = true }
+hashbrown = { version = "0.15", optional = true }
 core-error = { version = "0.0", default-features = false, features = ["alloc"], optional = true }
 serde = { version = "1.0", default-features = false, features = ["derive", "alloc"], optional = true }
 serde_json = { version = "1.0", default-features = false, features = ["alloc"], optional = true }
 unicode-xid = { version = "0.2", default-features = false, optional = true }
 rust_decimal = { version = "1.16", default-features = false, features = ["maths"], optional = true }
 getrandom = { version = "0.2", optional = true }
-rustyline = { version = "11", optional = true }
+rustyline = { version = "14", optional = true }
 document-features = { version = "0.2", optional = true }
 
 [dev-dependencies]
diff --git a/codegen/Cargo.toml b/codegen/Cargo.toml
index 8a1495c9..d5669baf 100644
--- a/codegen/Cargo.toml
+++ b/codegen/Cargo.toml
@@ -20,7 +20,7 @@ metadata = []
 
 [dependencies]
 proc-macro2 = "1"
-syn = { version = "1.0", features = ["full", "parsing", "printing", "proc-macro", "extra-traits"] }
+syn = { version = "2.0", features = ["full", "parsing", "printing", "proc-macro", "extra-traits"] }
 quote = "1"
 
 [dev-dependencies]