diff --git a/pkgs/by-name/cs/csvlens/package.nix b/pkgs/by-name/cs/csvlens/package.nix
index 6d84f0302b14..eeff5047f1b8 100644
--- a/pkgs/by-name/cs/csvlens/package.nix
+++ b/pkgs/by-name/cs/csvlens/package.nix
@@ -2,21 +2,31 @@
   lib,
   rustPlatform,
   fetchFromGitHub,
+  fetchpatch2,
 }:
 
 rustPlatform.buildRustPackage rec {
   pname = "csvlens";
-  version = "0.11.0";
+  version = "0.12.0";
 
   src = fetchFromGitHub {
     owner = "YS-L";
     repo = "csvlens";
     tag = "v${version}";
-    hash = "sha256-JlyDw+VL/vpKTvvBlDIwVIovhKJX2pV4UTY47cLR1IE=";
+    hash = "sha256-kyUfpZaOpLP8nGrXH8t9cOutXFkZsmZnPmIu3t6uaWU=";
   };
 
+  patches = [
+    (fetchpatch2 {
+      # https://github.com/YS-L/csvlens/pull/129
+      name = "fix-flaky-test.patch";
+      url = "https://github.com/YS-L/csvlens/commit/8544e9d4179eef10e8d1a625a41c0e1ef3eb188b.patch";
+      hash = "sha256-j02H+R14Hfm7ZEHFPRGqTY/GEzj5ETXp72kk7os9Zso=";
+    })
+  ];
+
   useFetchCargoVendor = true;
-  cargoHash = "sha256-nfw8mMauOTDCBh9O2ye96p8WXDFta4DXXb9kJVz7f3E=";
+  cargoHash = "sha256-lr1pqFodqgsKHRFGonXj0nG4elomiSMETulBdCLMR3w=";
 
   meta = with lib; {
     description = "Command line csv viewer";