diff --git a/cocoa-foundation/Cargo.toml b/cocoa-foundation/Cargo.toml
index 3cedaf1..817b2ba 100644
--- a/cocoa-foundation/Cargo.toml
+++ b/cocoa-foundation/Cargo.toml
@@ -6,7 +6,7 @@ homepage = "https://github.com/servo/core-foundation-rs"
 repository = "https://github.com/servo/core-foundation-rs"
 version = "0.1.1"
 authors = ["The Servo Project Developers"]
-license = "MIT / Apache-2.0"
+license = "MIT OR Apache-2.0"
 
 [package.metadata.docs.rs]
 default-target = "x86_64-apple-darwin"
diff --git a/cocoa/Cargo.toml b/cocoa/Cargo.toml
index f4ce66e..776c51d 100644
--- a/cocoa/Cargo.toml
+++ b/cocoa/Cargo.toml
@@ -6,7 +6,7 @@ homepage = "https://github.com/servo/core-foundation-rs"
 repository = "https://github.com/servo/core-foundation-rs"
 version = "0.24.1"
 authors = ["The Servo Project Developers"]
-license = "MIT / Apache-2.0"
+license = "MIT OR Apache-2.0"
 
 [package.metadata.docs.rs]
 default-target = "x86_64-apple-darwin"
diff --git a/core-foundation-sys/Cargo.toml b/core-foundation-sys/Cargo.toml
index cb299e5..3c3facc 100644
--- a/core-foundation-sys/Cargo.toml
+++ b/core-foundation-sys/Cargo.toml
@@ -5,7 +5,7 @@ homepage = "https://github.com/servo/core-foundation-rs"
 repository = "https://github.com/servo/core-foundation-rs"
 version = "0.8.4"
 authors = ["The Servo Project Developers"]
-license = "MIT / Apache-2.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
 
diff --git a/core-foundation/Cargo.toml b/core-foundation/Cargo.toml
index 15f016b..317accd 100644
--- a/core-foundation/Cargo.toml
+++ b/core-foundation/Cargo.toml
@@ -5,7 +5,7 @@ homepage = "https://github.com/servo/core-foundation-rs"
 repository = "https://github.com/servo/core-foundation-rs"
 version = "0.9.3"
 authors = ["The Servo Project Developers"]
-license = "MIT / Apache-2.0"
+license = "MIT OR Apache-2.0"
 categories = ["os::macos-apis"]
 keywords = ["macos", "framework", "objc"]
 
diff --git a/core-graphics-types/Cargo.toml b/core-graphics-types/Cargo.toml
index baf273d..6c7d0a5 100644
--- a/core-graphics-types/Cargo.toml
+++ b/core-graphics-types/Cargo.toml
@@ -5,7 +5,7 @@ homepage = "https://github.com/servo/core-foundation-rs"
 repository = "https://github.com/servo/core-foundation-rs"
 version = "0.1.1"
 authors = ["The Servo Project Developers"]
-license = "MIT / Apache-2.0"
+license = "MIT OR Apache-2.0"
 
 [dependencies]
 bitflags = "1.0"
diff --git a/core-graphics/Cargo.toml b/core-graphics/Cargo.toml
index 79b0eb2..95f4e49 100644
--- a/core-graphics/Cargo.toml
+++ b/core-graphics/Cargo.toml
@@ -5,7 +5,7 @@ homepage = "https://github.com/servo/core-foundation-rs"
 repository = "https://github.com/servo/core-foundation-rs"
 version = "0.22.3"
 authors = ["The Servo Project Developers"]
-license = "MIT / Apache-2.0"
+license = "MIT OR Apache-2.0"
 
 [features]
 default = []
diff --git a/core-text/Cargo.toml b/core-text/Cargo.toml
index a236e57..3c8ee96 100644
--- a/core-text/Cargo.toml
+++ b/core-text/Cargo.toml
@@ -3,7 +3,7 @@ name = "core-text"
 version = "19.2.0"
 authors = ["The Servo Project Developers"]
 description = "Bindings to the Core Text framework."
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 repository = "https://github.com/servo/core-foundation-rs"
 
 [package.metadata.docs.rs]
diff --git a/io-surface/Cargo.toml b/io-surface/Cargo.toml
index 9215da7..a3b8684 100644
--- a/io-surface/Cargo.toml
+++ b/io-surface/Cargo.toml
@@ -5,7 +5,7 @@ homepage = "https://github.com/servo/core-foundation-rs"
 repository = "https://github.com/servo/core-foundation-rs"
 version = "0.15.1"
 authors = ["The Servo Project Developers"]
-license = "MIT / Apache-2.0"
+license = "MIT OR Apache-2.0"
 
 [package.metadata.docs.rs]
 default-target = "x86_64-apple-darwin"