diff --git a/library/alloc/Cargo.toml b/library/alloc/Cargo.toml
index d95b5b7f17f42..4f97c95bcb9ea 100644
--- a/library/alloc/Cargo.toml
+++ b/library/alloc/Cargo.toml
@@ -2,6 +2,9 @@
 authors = ["The Rust Project Developers"]
 name = "alloc"
 version = "0.0.0"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/rust.git"
+description = "The Rust core allocation and collections library"
 autotests = false
 autobenches = false
 edition = "2018"
diff --git a/library/core/Cargo.toml b/library/core/Cargo.toml
index c1596012eac24..4a7dbb91822e2 100644
--- a/library/core/Cargo.toml
+++ b/library/core/Cargo.toml
@@ -2,6 +2,9 @@
 authors = ["The Rust Project Developers"]
 name = "core"
 version = "0.0.0"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/rust.git"
+description = "The Rust Core Library"
 autotests = false
 autobenches = false
 edition = "2018"
diff --git a/library/panic_abort/Cargo.toml b/library/panic_abort/Cargo.toml
index b15919fad75e7..caa89aa30d0bb 100644
--- a/library/panic_abort/Cargo.toml
+++ b/library/panic_abort/Cargo.toml
@@ -2,6 +2,9 @@
 authors = ["The Rust Project Developers"]
 name = "panic_abort"
 version = "0.0.0"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/rust.git"
+description = "Implementation of Rust panics via process aborts"
 edition = "2018"
 
 [lib]
diff --git a/library/panic_unwind/Cargo.toml b/library/panic_unwind/Cargo.toml
index d27ba9876416d..533f059a85e45 100644
--- a/library/panic_unwind/Cargo.toml
+++ b/library/panic_unwind/Cargo.toml
@@ -2,6 +2,9 @@
 authors = ["The Rust Project Developers"]
 name = "panic_unwind"
 version = "0.0.0"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/rust.git"
+description = "Implementation of Rust panics via stack unwinding"
 edition = "2018"
 
 [lib]
diff --git a/library/unwind/Cargo.toml b/library/unwind/Cargo.toml
index 4f7a304a59f68..69128591e0672 100644
--- a/library/unwind/Cargo.toml
+++ b/library/unwind/Cargo.toml
@@ -2,6 +2,8 @@
 authors = ["The Rust Project Developers"]
 name = "unwind"
 version = "0.0.0"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/rust.git"
 edition = "2018"
 include = [
   '/libunwind/*',