diff --git a/Cargo.toml b/Cargo.toml
index 7e43e15245..450ce4f78a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ authors = [
     "Dan Gohman <sunfish@mozilla.com>"]
 edition = "2018"
 license = "Apache-2.0 WITH LLVM-exception"
+description = "WASI implementation in Rust"
 
 [dependencies]
 wasi-common-cbindgen = { path = "wasi-common-cbindgen" }
diff --git a/wasi-common-cbindgen/Cargo.toml b/wasi-common-cbindgen/Cargo.toml
index 14355f286e..9891039d21 100644
--- a/wasi-common-cbindgen/Cargo.toml
+++ b/wasi-common-cbindgen/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.1.0"
 authors = ["Jakub Konka <kubkon@jakubkonka.com>"]
 edition = "2018"
 license = "Apache-2.0 WITH LLVM-exception"
+description = "Interface generator utilities used by wasi-common"
 
 [lib]
 proc-macro = true
diff --git a/winx/Cargo.toml b/winx/Cargo.toml
index fd40ab30ae..cb75e33f04 100644
--- a/winx/Cargo.toml
+++ b/winx/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.1.0"
 authors = ["Jakub Konka <kubkon@jakubkonka.com>"]
 edition = "2018"
 license = "Apache-2.0 WITH LLVM-exception"
+description = "Windows API helper library"
 
 [dependencies]
 winapi = { version = "0.3", features = ["std", "errhandlingapi", "handleapi", "processthreadsapi", "securitybaseapi", "winbase", "winerror", "ws2def", "fileapi", "aclapi" ] }