diff --git a/bindgen-cli/Cargo.toml b/bindgen-cli/Cargo.toml
index 2e5bf1b47f..d6ab1b06e2 100644
--- a/bindgen-cli/Cargo.toml
+++ b/bindgen-cli/Cargo.toml
@@ -12,7 +12,7 @@ repository = "https://github.com/rust-lang/rust-bindgen"
 documentation = "https://docs.rs/bindgen"
 homepage = "https://rust-lang.github.io/rust-bindgen/"
 version = "0.70.1"
-edition = "2018"
+edition = "2021"
 rust-version = "1.70.0"
 
 [[bin]]
diff --git a/bindgen-integration/Cargo.toml b/bindgen-integration/Cargo.toml
index cf89e2d9b9..38b52322cc 100644
--- a/bindgen-integration/Cargo.toml
+++ b/bindgen-integration/Cargo.toml
@@ -4,7 +4,7 @@ description = "A package to test various bindgen features"
 version = "0.1.0"
 authors = ["Emilio Cobos Álvarez <emilio@crisal.io>"]
 publish = false
-edition = "2018"
+edition = "2021"
 build = "build.rs"
 
 [build-dependencies]
diff --git a/bindgen-integration/src/lib.rs b/bindgen-integration/src/lib.rs
index 48cfe092d2..b939d25b25 100755
--- a/bindgen-integration/src/lib.rs
+++ b/bindgen-integration/src/lib.rs
@@ -259,7 +259,7 @@ fn test_matching_with_rename() {
 
 #[test]
 fn test_macro_customintkind_path() {
-    let v: &std::any::Any = &bindings::TESTMACRO_CUSTOMINTKIND_PATH;
+    let v: &dyn std::any::Any = &bindings::TESTMACRO_CUSTOMINTKIND_PATH;
     assert!(v.is::<MacroInteger>())
 }
 
diff --git a/bindgen-tests/Cargo.toml b/bindgen-tests/Cargo.toml
index 4a92f81f55..b9547bb1ad 100644
--- a/bindgen-tests/Cargo.toml
+++ b/bindgen-tests/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "bindgen-tests"
-edition = "2018"
+edition = "2021"
 version = "0.1.0"
 publish = false
 
diff --git a/bindgen-tests/tests/expectations/Cargo.toml b/bindgen-tests/tests/expectations/Cargo.toml
index adb95d56d2..e95e9dcb1c 100644
--- a/bindgen-tests/tests/expectations/Cargo.toml
+++ b/bindgen-tests/tests/expectations/Cargo.toml
@@ -7,7 +7,7 @@ authors = [
   "Emilio Cobos Álvarez <emilio@crisal.io>",
   "The Servo project developers",
 ]
-edition = "2018"
+edition = "2021"
 publish = false
 
 [dependencies]
diff --git a/bindgen-tests/tests/quickchecking/Cargo.toml b/bindgen-tests/tests/quickchecking/Cargo.toml
index 0fafac97f3..998643bbf4 100644
--- a/bindgen-tests/tests/quickchecking/Cargo.toml
+++ b/bindgen-tests/tests/quickchecking/Cargo.toml
@@ -4,7 +4,7 @@ description = "Bindgen property tests with quickcheck. Generate random valid C c
 version = "0.0.0"
 publish = false
 rust-version = "1.70"
-edition = "2018"
+edition = "2021"
 
 [lib]
 name = "quickchecking"
diff --git a/bindgen/Cargo.toml b/bindgen/Cargo.toml
index d8b872b77c..47462e1788 100644
--- a/bindgen/Cargo.toml
+++ b/bindgen/Cargo.toml
@@ -15,7 +15,7 @@ repository = "https://github.com/rust-lang/rust-bindgen"
 documentation = "https://docs.rs/bindgen"
 homepage = "https://rust-lang.github.io/rust-bindgen/"
 version = "0.70.1"
-edition = "2018"
+edition = "2021"
 build = "build.rs"
 # If you change this, also update README.md and msrv in .github/workflows/bindgen.yml
 rust-version = "1.70.0"