diff --git a/pkgs/applications/science/biology/mafft/default.nix b/pkgs/applications/science/biology/mafft/default.nix
index f2e3ead2e913..ca1f89388a44 100644
--- a/pkgs/applications/science/biology/mafft/default.nix
+++ b/pkgs/applications/science/biology/mafft/default.nix
@@ -1,14 +1,20 @@
-{ lib, stdenv, fetchFromGitLab }:
+{
+  lib,
+  stdenv,
+  fetchFromGitLab,
+  runCommand,
+  mafft,
+}:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "mafft";
-  version = "7.525";
+  version = "7.526";
 
   src = fetchFromGitLab {
     owner = "sysimm";
-    repo = pname;
-    rev = "v${version}";
-    sha256 = "sha256-ckBmvFssYAmYcBHAEftjQqBV0MB0theGfemaPx3XUws=";
+    repo = "mafft";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-VNe00r12qEkLEbpZdJCe5xZ73JA3uAmuAeG+eSeRDI0=";
   };
 
   preBuild = ''
@@ -16,14 +22,34 @@ stdenv.mkDerivation rec {
     make clean
   '';
 
-  makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" "PREFIX=$(out)" ];
+  makeFlags = [
+    "CC=${stdenv.cc.targetPrefix}cc"
+    "PREFIX=$(out)"
+  ];
 
-  meta = with lib;
-    {
-      description = "Multiple alignment program for amino acid or nucleotide sequences";
-      homepage = "https://mafft.cbrc.jp/alignment/software/";
-      license = licenses.bsd3;
-      maintainers = with maintainers; [ natsukium ];
-      platforms = platforms.unix;
-    };
-}
+  passthru.tests = {
+    simple = runCommand "${finalAttrs.pname}-test" { } ''
+      mkdir $out
+      cd ${finalAttrs.src}/test
+      ${lib.getExe mafft} sample > $out/test.fftns2
+      ${lib.getExe mafft} --maxiterate 100  sample > $out/test.fftnsi
+      ${lib.getExe mafft} --globalpair sample > $out/test.gins1
+      ${lib.getExe mafft} --globalpair --maxiterate 100  sample > $out/test.ginsi
+      ${lib.getExe mafft} --localpair sample > $out/test.lins1
+      ${lib.getExe mafft} --localpair --maxiterate 100  sample > $out/test.linsi
+      diff $out/test.fftns2 sample.fftns2
+      diff $out/test.fftnsi sample.fftnsi
+      diff $out/test.gins1 sample.gins1
+      diff $out/test.ginsi sample.ginsi
+      diff $out/test.lins1 sample.lins1
+    '';
+  };
+
+  meta = with lib; {
+    description = "Multiple alignment program for amino acid or nucleotide sequences";
+    homepage = "https://mafft.cbrc.jp/alignment/software/";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ natsukium ];
+    platforms = platforms.unix;
+  };
+})