diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 16b097cda7..10c394ff0a 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -10756,14 +10756,14 @@ (define-public rust-cfg-aliases-0.1
 (define-public rust-cfg-expr-0.15
   (package
     (name "rust-cfg-expr")
-    (version "0.15.3")
+    (version "0.15.6")
     (source (origin
               (method url-fetch)
               (uri (crate-uri "cfg-expr" version))
               (file-name (string-append name "-" version ".tar.gz"))
               (sha256
                (base32
-                "0744z7sky6kgchfk2ilchb16bjyz7nk8p8zfn3p953y2xir00p11"))))
+                "06m4hbpzgjn8m2r8sy5xywrd6ja8d1sjgjwmimwl1610nrbvq031"))))
     (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs