diff --git a/pkgs/development/tools/misc/hydra/common.nix b/pkgs/development/tools/misc/hydra/common.nix
index 0cc7769d3c5..9ad8295c9b9 100644
--- a/pkgs/development/tools/misc/hydra/common.nix
+++ b/pkgs/development/tools/misc/hydra/common.nix
@@ -37,6 +37,8 @@ let
         CatalystViewTT
         CatalystXScriptServerStarman
         CatalystXRoleApplicator
+        CryptPassphrase
+        CryptPassphraseArgon2
         CryptRandPasswd
         DBDPg
         DBDSQLite
@@ -61,6 +63,7 @@ let
         SQLSplitStatement
         SetScalar
         Starman
+        StringCompareConstantTime
         SysHostnameLong
         TermSizeAny
         TextDiff
diff --git a/pkgs/development/tools/misc/hydra/default.nix b/pkgs/development/tools/misc/hydra/default.nix
index 7bed3b5d202..142322eb59d 100644
--- a/pkgs/development/tools/misc/hydra/default.nix
+++ b/pkgs/development/tools/misc/hydra/default.nix
@@ -2,12 +2,12 @@
 
 {
   hydra-unstable = callPackage ./common.nix {
-    version = "2021-04-29";
+    version = "2021-05-03";
     src = fetchFromGitHub {
       owner = "NixOS";
       repo = "hydra";
-      rev = "6047b1dd04d44acff9343b6b971ab609b73099d5";
-      sha256 = "sha256-E7JOHhSd4gIzE6FvSZVMxZE9WagbBkrfZVoibkanaYE=";
+      rev = "886e6f85e45a1f757e9b77d2a9e4539fbde29468";
+      sha256 = "t7Qb57Xjc0Ou+VDGC1N5u9AmeODW6MVOwKSrYRJq5f0=";
     };
     nix = nixFlakes;
 
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 9dc9444e096..e7c83018327 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -3907,6 +3907,20 @@ let
     };
   };
 
+  CryptArgon2 = perlPackages.buildPerlModule {
+    pname = "Crypt-Argon2";
+    version = "0.010";
+    src = fetchurl {
+      url = "mirror://cpan/authors/id/L/LE/LEONT/Crypt-Argon2-0.010.tar.gz";
+      sha256 = "3ea1c006f10ef66fd417e502a569df15c4cc1c776b084e35639751c41ce6671a";
+    };
+    nativeBuildInputs = [ pkgs.ld-is-cc-hook ];
+    meta = {
+      description = "Perl interface to the Argon2 key derivation functions";
+      license = lib.licenses.cc0;
+    };
+  };
+
   CryptBlowfish = buildPerlPackage {
     pname = "Crypt-Blowfish";
     version = "2.14";
@@ -4081,6 +4095,33 @@ let
     };
   };
 
+  CryptPassphrase = buildPerlPackage {
+    pname = "Crypt-Passphrase";
+    version = "0.003";
+    src = fetchurl {
+      url = "mirror://cpan/authors/id/L/LE/LEONT/Crypt-Passphrase-0.003.tar.gz";
+      sha256 = "685aa090f8179a86d6896212ccf8ccfde7a79cce857199bb14e2277a10d240ad";
+    };
+    meta = {
+      description = "A module for managing passwords in a cryptographically agile manner";
+      license = with lib.licenses; [ artistic1 gpl1Plus ];
+    };
+  };
+
+  CryptPassphraseArgon2 = buildPerlPackage {
+    pname = "Crypt-Passphrase-Argon2";
+    version = "0.002";
+    src = fetchurl {
+      url = "mirror://cpan/authors/id/L/LE/LEONT/Crypt-Passphrase-Argon2-0.002.tar.gz";
+      sha256 = "3906ff81697d13804ee21bd5ab78ffb1c4408b4822ce020e92ecf4737ba1f3a8";
+    };
+    propagatedBuildInputs = with perlPackages; [ CryptArgon2 CryptPassphrase ];
+    meta = {
+      description = "An Argon2 encoder for Crypt::Passphrase";
+      license = with lib.licenses; [ artistic1 gpl1Plus ];
+    };
+  };
+
   CryptPasswdMD5 = buildPerlModule {
     pname = "Crypt-PasswdMD5";
     version = "1.40";
@@ -18819,6 +18860,19 @@ let
     };
   };
 
+  StringCompareConstantTime = buildPerlPackage {
+    pname = "String-Compare-ConstantTime";
+    version = "0.321";
+    src = fetchurl {
+      url = "mirror://cpan/authors/id/F/FR/FRACTAL/String-Compare-ConstantTime-0.321.tar.gz";
+      sha256 = "0b26ba2b121d8004425d4485d1d46f59001c83763aa26624dff6220d7735d7f7";
+    };
+    meta = {
+      description = "Timing side-channel protected string compare";
+      license = with lib.licenses; [ artistic1 gpl1Plus ];
+    };
+  };
+
   StringCRC32 = buildPerlPackage {
     pname = "String-CRC32";
     version = "2";