diff --git a/crates/oxc_index/Cargo.toml b/crates/oxc_index/Cargo.toml
index 4271deef8..6ad63111f 100644
--- a/crates/oxc_index/Cargo.toml
+++ b/crates/oxc_index/Cargo.toml
@@ -11,6 +11,7 @@ license.workspace      = true
 repository.workspace   = true
 rust-version.workspace = true
 categories.workspace   = true
+include                = ["/src"]
 
 [lints]
 workspace = true
diff --git a/crates/oxc_module_lexer/Cargo.toml b/crates/oxc_module_lexer/Cargo.toml
index 686695e6d..ad26d670e 100644
--- a/crates/oxc_module_lexer/Cargo.toml
+++ b/crates/oxc_module_lexer/Cargo.toml
@@ -11,6 +11,7 @@ license.workspace      = true
 repository.workspace   = true
 rust-version.workspace = true
 categories.workspace   = true
+include                = ["/src"]
 
 [lints]
 workspace = true