diff --git a/pkgs/by-name/ri/rio/package.nix b/pkgs/by-name/ri/rio/package.nix
index 21a169c0288a..f5717869361b 100644
--- a/pkgs/by-name/ri/rio/package.nix
+++ b/pkgs/by-name/ri/rio/package.nix
@@ -51,16 +51,24 @@ let
 in
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "rio";
-  version = "0.4.5";
+  version = "0.4.7";
 
   src = fetchFromGitHub {
     owner = "raphamorim";
     repo = "rio";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-ON7CJ1NDwLfjvLZ0ugN45LUjBGiwRNASiQwuDa6F1vM=";
+    hash = "sha256-vlNt8hBb1fhO5tEAID5WXMc7I0k9vn6/L45nkTXS6Qg=";
   };
 
-  cargoHash = "sha256-vSQ5heZZ8tYKeMABhZ8AziEAniavnAasH04BVlqYF4g=";
+  cargoHash = "sha256-8qVS9wINEBLKKWbylG3sHO+oqnLvsa1wgN0OOHFzOBM=";
+
+  # The 0.4.7 "update to rust 1.96" bump (raphamorim/rio@6a11aa33c7) only made
+  # clippy-style refactors that build on older rustc; the MSRV pin is cosmetic.
+  # Lower it so nixpkgs' rustc (1.95) can build rio.
+  postPatch = ''
+    substituteInPlace Cargo.toml \
+      --replace-fail 'rust-version = "1.96.0"' 'rust-version = "1.95.0"'
+  '';
 
   nativeBuildInputs = [
     rustPlatform.bindgenHook