diff --git a/derive_builder/Cargo.toml b/derive_builder/Cargo.toml
index 62ed7b6c..6aa32767 100644
--- a/derive_builder/Cargo.toml
+++ b/derive_builder/Cargo.toml
@@ -10,7 +10,7 @@ description = "Rust macro to automatically implement the builder pattern for arb
 repository = "https://github.com/colin-kiegel/rust-derive-builder"
 documentation = "https://docs.rs/derive_builder/0.12.0"
 
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 categories = ["development-tools", "rust-patterns"]
 keywords = ["derive", "macro", "builder", "setter", "struct"]
 readme = "README.md"
diff --git a/derive_builder/tests/dummy-crate/Cargo.toml b/derive_builder/tests/dummy-crate/Cargo.toml
index e1baf731..6267bcc0 100644
--- a/derive_builder/tests/dummy-crate/Cargo.toml
+++ b/derive_builder/tests/dummy-crate/Cargo.toml
@@ -3,7 +3,7 @@ name = "derive_builder_dummy_crate"
 version = "0.1.0"
 authors = ["Colin Kiegel <kiegel@gmx.de>"]
 description = "This dummy crate serves as a playground to **manually** inspect things like generated documentation. It is **not** tested automatically."
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 publish = false
 
 [lib]
diff --git a/derive_builder_core/Cargo.toml b/derive_builder_core/Cargo.toml
index ee6bace8..8517ecdf 100644
--- a/derive_builder_core/Cargo.toml
+++ b/derive_builder_core/Cargo.toml
@@ -10,7 +10,7 @@ description = "Internal helper library for the derive_builder crate."
 repository = "https://github.com/colin-kiegel/rust-derive-builder"
 documentation = "https://docs.rs/derive_builder_core"
 
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 readme = "README.md"
 
 [features]
diff --git a/derive_builder_macro/Cargo.toml b/derive_builder_macro/Cargo.toml
index 7a733ada..531b6802 100644
--- a/derive_builder_macro/Cargo.toml
+++ b/derive_builder_macro/Cargo.toml
@@ -10,7 +10,7 @@ description = "Rust macro to automatically implement the builder pattern for arb
 repository = "https://github.com/colin-kiegel/rust-derive-builder"
 documentation = "https://docs.rs/derive_builder_macro/0.12.0"
 
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 categories = ["development-tools", "rust-patterns"]
 keywords = ["derive", "macro", "builder", "setter", "struct"]
 readme = "README.md"