diff --git a/lang/rust/src/cargo.sld b/lang/rust/src/cargo.sld
index 5f04999..a07f840 100644
--- a/lang/rust/src/cargo.sld
+++ b/lang/rust/src/cargo.sld
@@ -387,7 +387,6 @@
            (cargo-dependency-from-toml (car kv) (if (string? (cdr kv)) (vector (cons "version" (cdr kv))) (cdr kv)) workspace #f))
          (vector->list (or (and-cdr (assoc "dependencies" internals)) #()))))
 
-     ;; TODO(puck): target.{matching cfg}.build-dependencies???
      (define build-dependencies
        (map
          (lambda (kv)
@@ -410,7 +409,14 @@
                  (lambda (kv)
                    (cargo-dependency-from-toml (car kv) (if (string? (cdr kv)) (vector (cons "version" (cdr kv))) (cdr kv)) workspace #f))
                  (vector->list (or (and-cdr (assoc "dependencies" (vector->list contents))) #())))
-               dependencies))))
+               dependencies))
+           (set! build-dependencies
+             (append
+               (map
+                 (lambda (kv)
+                   (cargo-dependency-from-toml (car kv) (if (string? (cdr kv)) (vector (cons "version" (cdr kv))) (cdr kv)) workspace #f))
+                 (vector->list (or (and-cdr (assoc "build-dependencies" (vector->list contents))) #())))
+               build-dependencies))))
        (vector->list (or (and-cdr (assoc "target" internals)) #())))
 
      (define own-features (parse-features (vector->list (or (and-cdr (assoc "features" internals)) #())) (map cargo-dependency-name dependencies) (map cargo-dependency-name build-dependencies)))