diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index e1d0bd51e1..b895ce77cb 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -33687,6 +33687,20 @@ variants in pure Rust.")
 data type.")
     (license license:expat)))
 
+(define-public rust-slab-0.3
+  (package
+    (inherit rust-slab-0.4)
+    (name "rust-slab")
+    (version "0.3.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "slab" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "08xw8w61zdfn1094qkq1d554vh5wmm9bqdys8gqqxc4sv2pgrd0p"))))
+    (arguments `(#:skip-build? #t))))
+
 ;; TODO: Unbundle sleef.
 (define-public rust-sleef-sys-0.1
   (package