diff --git a/serde/Cargo.toml b/serde/Cargo.toml
index b244792f..83392105 100644
--- a/serde/Cargo.toml
+++ b/serde/Cargo.toml
@@ -2,7 +2,7 @@
 name = "serde"
 version = "1.0.91" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 description = "A generic serialization/deserialization framework"
 homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"
diff --git a/serde_derive/Cargo.toml b/serde_derive/Cargo.toml
index cfd68ea9..dcf4cc0f 100644
--- a/serde_derive/Cargo.toml
+++ b/serde_derive/Cargo.toml
@@ -2,7 +2,7 @@
 name = "serde_derive"
 version = "1.0.91" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 description = "Macros 1.1 implementation of #[derive(Serialize, Deserialize)]"
 homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"
diff --git a/serde_derive_internals/Cargo.toml b/serde_derive_internals/Cargo.toml
index 63671582..8923840f 100644
--- a/serde_derive_internals/Cargo.toml
+++ b/serde_derive_internals/Cargo.toml
@@ -2,7 +2,7 @@
 name = "serde_derive_internals"
 version = "0.24.1" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 description = "AST representation used by Serde derive macros. Unstable."
 homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"
diff --git a/serde_test/Cargo.toml b/serde_test/Cargo.toml
index 3d5aa5e9..1a40a2fb 100644
--- a/serde_test/Cargo.toml
+++ b/serde_test/Cargo.toml
@@ -2,7 +2,7 @@
 name = "serde_test"
 version = "1.0.91" # remember to update html_root_url
 authors = ["Erick Tryzelaar <erick.tryzelaar@gmail.com>", "David Tolnay <dtolnay@gmail.com>"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 description = "Token De/Serializer for testing De/Serialize implementations"
 homepage = "https://serde.rs"
 repository = "https://github.com/serde-rs/serde"