diff --git a/Cargo.toml b/Cargo.toml
index 239aeb0d..6695487c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ repository = "https://github.com/extendr/libR-sys"
 [dependencies]
 
 [build-dependencies]
-bindgen = { version = "0.66", optional = true, features = ["experimental"] }
+bindgen = { version = "0.68.1", optional = true, features = ["experimental"] }
 clang = { version = "2", optional = true, features = ["runtime", "clang_3_7"] }
 
 [features]
diff --git a/bindings/bindings-linux-aarch64-R4.2.rs b/bindings/bindings-linux-aarch64-R4.2.rs
index 0c40d277..9747468f 100644
--- a/bindings/bindings-linux-aarch64-R4.2.rs
+++ b/bindings/bindings-linux-aarch64-R4.2.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Ubuntu clang version 15.0.7 */
diff --git a/bindings/bindings-linux-aarch64-R4.3.rs b/bindings/bindings-linux-aarch64-R4.3.rs
index 277c54ed..7d863612 100644
--- a/bindings/bindings-linux-aarch64-R4.3.rs
+++ b/bindings/bindings-linux-aarch64-R4.3.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Ubuntu clang version 15.0.7 */
diff --git a/bindings/bindings-linux-aarch64-R4.4-devel.rs b/bindings/bindings-linux-aarch64-R4.4-devel.rs
index 64034519..a79303d3 100644
--- a/bindings/bindings-linux-aarch64-R4.4-devel.rs
+++ b/bindings/bindings-linux-aarch64-R4.4-devel.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Ubuntu clang version 15.0.7 */
diff --git a/bindings/bindings-linux-x86_64-R4.2.rs b/bindings/bindings-linux-x86_64-R4.2.rs
index 817edb4a..ecb0fc5f 100644
--- a/bindings/bindings-linux-x86_64-R4.2.rs
+++ b/bindings/bindings-linux-x86_64-R4.2.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Ubuntu clang version 15.0.7 */
diff --git a/bindings/bindings-linux-x86_64-R4.3.rs b/bindings/bindings-linux-x86_64-R4.3.rs
index cdbe9f62..633fa600 100644
--- a/bindings/bindings-linux-x86_64-R4.3.rs
+++ b/bindings/bindings-linux-x86_64-R4.3.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Ubuntu clang version 15.0.7 */
diff --git a/bindings/bindings-linux-x86_64-R4.4-devel.rs b/bindings/bindings-linux-x86_64-R4.4-devel.rs
index a7844500..e61e6f85 100644
--- a/bindings/bindings-linux-x86_64-R4.4-devel.rs
+++ b/bindings/bindings-linux-x86_64-R4.4-devel.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Ubuntu clang version 15.0.7 */
diff --git a/bindings/bindings-macos-aarch64-R4.3.rs b/bindings/bindings-macos-aarch64-R4.3.rs
index 4abe7c46..3c2fdd2b 100644
--- a/bindings/bindings-macos-aarch64-R4.3.rs
+++ b/bindings/bindings-macos-aarch64-R4.3.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Homebrew clang version 16.0.6 */
diff --git a/bindings/bindings-macos-x86_64-R4.2.rs b/bindings/bindings-macos-x86_64-R4.2.rs
index 784bf473..805e16d8 100644
--- a/bindings/bindings-macos-x86_64-R4.2.rs
+++ b/bindings/bindings-macos-x86_64-R4.2.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Homebrew clang version 16.0.6 */
diff --git a/bindings/bindings-macos-x86_64-R4.3.rs b/bindings/bindings-macos-x86_64-R4.3.rs
index 223ec11c..ccda2636 100644
--- a/bindings/bindings-macos-x86_64-R4.3.rs
+++ b/bindings/bindings-macos-x86_64-R4.3.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Homebrew clang version 16.0.6 */
diff --git a/bindings/bindings-macos-x86_64-R4.4-devel.rs b/bindings/bindings-macos-x86_64-R4.4-devel.rs
index 0e5676cd..f5aba5f5 100644
--- a/bindings/bindings-macos-x86_64-R4.4-devel.rs
+++ b/bindings/bindings-macos-x86_64-R4.4-devel.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: Homebrew clang version 16.0.6 */
diff --git a/bindings/bindings-windows-x86_64-R4.2.rs b/bindings/bindings-windows-x86_64-R4.2.rs
index 6757c3b6..8d4acadf 100644
--- a/bindings/bindings-windows-x86_64-R4.2.rs
+++ b/bindings/bindings-windows-x86_64-R4.2.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: clang version 16.0.6 */
diff --git a/bindings/bindings-windows-x86_64-R4.3.rs b/bindings/bindings-windows-x86_64-R4.3.rs
index 0facca69..a15a40b3 100644
--- a/bindings/bindings-windows-x86_64-R4.3.rs
+++ b/bindings/bindings-windows-x86_64-R4.3.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: clang version 16.0.6 */
diff --git a/bindings/bindings-windows-x86_64-R4.4-devel.rs b/bindings/bindings-windows-x86_64-R4.4-devel.rs
index 43c6c872..da61e239 100644
--- a/bindings/bindings-windows-x86_64-R4.4-devel.rs
+++ b/bindings/bindings-windows-x86_64-R4.4-devel.rs
@@ -1,4 +1,4 @@
-/* automatically generated by rust-bindgen 0.66.1 */
+/* automatically generated by rust-bindgen 0.68.1 */
 
 /* libR-sys version: 0.6.0 */
 /* bindgen clang version: clang version 16.0.6 */