diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 91d5cf193b..abc539bc67 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -12218,6 +12218,22 @@ idiomatic wrappers for Mac OS X's CommonCrypto library.")
 literals.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-const-fn-assert-0.1
+  (package
+    (name "rust-const-fn-assert")
+    (version "0.1.2")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "const-fn-assert" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32 "1451yxndri5zj95lyjzckj7m3qlpyj8ibp3pb8bbbxrl7zr19mi7"))))
+    (build-system cargo-build-system)
+    (home-page "https://github.com/powlpy/const_fn_assert")
+    (synopsis "Assertions for const functions")
+    (description "Assertions for const functions.")
+    (license license:expat)))
+
 ;; This package requires features which are unavailable
 ;; on the stable releases of Rust.
 (define-public rust-compiler-builtins-0.1