diff --git a/pkgs/applications/version-management/gitlab/gitaly/Gemfile b/pkgs/applications/version-management/gitlab/gitaly/Gemfile
index 81a8d9f69c8..1d7cf17161c 100644
--- a/pkgs/applications/version-management/gitlab/gitaly/Gemfile
+++ b/pkgs/applications/version-management/gitlab/gitaly/Gemfile
@@ -6,7 +6,7 @@ gem 'bundler', '>= 1.17.3'
 gem 'rugged', '~> 0.28'
 gem 'github-linguist', '~> 7.5', require: 'linguist'
 gem 'gitlab-markup', '~> 1.7.0'
-gem 'activesupport', '~> 5.2.3'
+gem 'activesupport', '6.0.2'
 gem 'rdoc', '~> 6.0'
 gem 'gitlab-gollum-lib', '~> 4.2.7.7', require: false
 gem 'gitlab-gollum-rugged_adapter', '~> 0.4.4.2', require: false
@@ -16,7 +16,7 @@ gem 'faraday', '~> 0.12'
 gem 'rbtrace', require: false
 
 # Labkit provides observability functionality
-gem 'gitlab-labkit', '~> 0.5.0'
+gem 'gitlab-labkit', '~> 0.9.1'
 
 # Detects the open source license the repository includes
 # This version needs to be in sync with GitLab CE/EE
diff --git a/pkgs/applications/version-management/gitlab/gitaly/Gemfile.lock b/pkgs/applications/version-management/gitlab/gitaly/Gemfile.lock
index c095ad39f51..e3f7865226a 100644
--- a/pkgs/applications/version-management/gitlab/gitaly/Gemfile.lock
+++ b/pkgs/applications/version-management/gitlab/gitaly/Gemfile.lock
@@ -2,24 +2,25 @@ GEM
   remote: https://rubygems.org/
   specs:
     abstract_type (0.0.7)
-    actionpack (5.2.3)
-      actionview (= 5.2.3)
-      activesupport (= 5.2.3)
+    actionpack (6.0.2)
+      actionview (= 6.0.2)
+      activesupport (= 6.0.2)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.2.3)
-      activesupport (= 5.2.3)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
+    actionview (6.0.2)
+      activesupport (= 6.0.2)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activesupport (5.2.3)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
+    activesupport (6.0.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
+      zeitwerk (~> 2.2)
     adamantium (0.2.0)
       ice_nine (~> 0.11.0)
       memoizable (~> 0.4.0)
@@ -27,7 +28,7 @@ GEM
       public_suffix (>= 2.0.2, < 4.0)
     ast (2.4.0)
     binding_ninja (0.2.3)
-    builder (3.2.3)
+    builder (3.2.4)
     charlock_holmes (0.7.6)
     coderay (1.1.2)
     concord (0.1.5)
@@ -36,11 +37,11 @@ GEM
     concurrent-ruby (1.1.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    crass (1.0.5)
+    crass (1.0.6)
     diff-lcs (1.3)
     docile (1.3.2)
     equalizer (0.0.11)
-    erubi (1.8.0)
+    erubi (1.9.0)
     escape_utils (1.2.1)
     factory_bot (5.0.2)
       activesupport (>= 4.2.0)
@@ -71,9 +72,9 @@ GEM
       diff-lcs (~> 1.1)
       mime-types (>= 1.16)
       posix-spawn (~> 0.3)
-    gitlab-labkit (0.5.2)
-      actionpack (~> 5)
-      activesupport (~> 5)
+    gitlab-labkit (0.9.1)
+      actionpack (>= 5.0.0, < 6.1.0)
+      activesupport (>= 5.0.0, < 6.1.0)
       grpc (~> 1.19)
       jaeger-client (~> 0.10)
       opentracing (~> 0.4)
@@ -88,7 +89,7 @@ GEM
       google-protobuf (~> 3.8)
       googleapis-common-protos-types (~> 1.0)
     hashdiff (0.3.9)
-    i18n (1.6.0)
+    i18n (1.8.2)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
     jaeger-client (0.10.0)
@@ -110,7 +111,7 @@ GEM
     mime-types-data (3.2019.0331)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.14.0)
     msgpack (1.3.1)
     multipart-post (2.0.0)
     nokogiri (1.10.7)
@@ -132,7 +133,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
-    rack (2.0.7)
+    rack (2.1.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)
@@ -146,8 +147,8 @@ GEM
       msgpack (>= 0.4.3)
       optimist (>= 3.0.0)
     rdoc (6.2.0)
-    redis (4.1.2)
-    rouge (3.11.0)
+    redis (4.1.3)
+    rouge (3.15.0)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -192,7 +193,7 @@ GEM
     thread_safe (0.3.6)
     thrift (0.11.0.0)
     timecop (0.9.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.6)
       thread_safe (~> 0.1)
     unicode-display_width (1.6.0)
     unparser (0.4.5)
@@ -208,19 +209,20 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
+    zeitwerk (2.2.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activesupport (~> 5.2.3)
+  activesupport (= 6.0.2)
   bundler (>= 1.17.3)
   factory_bot
   faraday (~> 0.12)
   github-linguist (~> 7.5)
   gitlab-gollum-lib (~> 4.2.7.7)
   gitlab-gollum-rugged_adapter (~> 0.4.4.2)
-  gitlab-labkit (~> 0.5.0)
+  gitlab-labkit (~> 0.9.1)
   gitlab-markup (~> 1.7.0)
   google-protobuf (~> 3.8.0)
   grpc (~> 1.24.0)
diff --git a/pkgs/applications/version-management/gitlab/gitaly/default.nix b/pkgs/applications/version-management/gitlab/gitaly/default.nix
index 831fdb398d6..4f9b8dc8696 100644
--- a/pkgs/applications/version-management/gitlab/gitaly/default.nix
+++ b/pkgs/applications/version-management/gitlab/gitaly/default.nix
@@ -1,4 +1,5 @@
-{ stdenv, fetchFromGitLab, buildGoPackage, ruby, bundlerEnv, pkgconfig, libgit2 }:
+{ stdenv, fetchFromGitLab, fetchFromGitHub, buildGoPackage, ruby,
+  bundlerEnv, pkgconfig, libgit2 }:
 
 let
   rubyEnv = bundlerEnv rec {
@@ -16,15 +17,24 @@ let
         };
       };
   };
+  libgit2_0_27 = libgit2.overrideAttrs (oldAttrs: rec {
+    version = "0.27.8";
+    src = fetchFromGitHub {
+      owner = "libgit2";
+      repo = "libgit2";
+      rev = "v${version}";
+      sha256 = "0wzx8nkyy9m7mx6cks58chjd4289vjsw97mxm9w6f1ggqsfnmbr9";
+    };
+  });
 in buildGoPackage rec {
-  version = "1.83.0";
+  version = "12.8.1";
   pname = "gitaly";
 
   src = fetchFromGitLab {
     owner = "gitlab-org";
     repo = "gitaly";
     rev = "v${version}";
-    sha256 = "1vwa38mhnxyncrrvp45d8s6fg94xaq8c71d7qh9ip77db0ak45kh";
+    sha256 = "0sjkh0j36dpakqmq7l5gd1ydmx1kxgij53bjvvn37r19liqdijnx";
   };
 
   # Fix a check which assumes that hook files are writeable by their
@@ -38,7 +48,7 @@ in buildGoPackage rec {
   };
 
   nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ rubyEnv.wrappedRuby libgit2 ];
+  buildInputs = [ rubyEnv.wrappedRuby libgit2_0_27 ];
   goDeps = ./deps.nix;
   preBuild = "rm -r go/src/gitlab.com/gitlab-org/labkit/vendor";
 
diff --git a/pkgs/applications/version-management/gitlab/gitaly/deps.nix b/pkgs/applications/version-management/gitlab/gitaly/deps.nix
index f710523103f..83a2f0f5f74 100644
--- a/pkgs/applications/version-management/gitlab/gitaly/deps.nix
+++ b/pkgs/applications/version-management/gitlab/gitaly/deps.nix
@@ -1319,8 +1319,8 @@
     fetch = {
       type = "git";
       url = "https://github.com/ugorji/go";
-      rev = "d75b2dcb6bc8";
-      sha256 = "0di1k35gpq9bp958ywranpbskx2vdwlb38s22vl9rybm3wa5g3ps";
+      rev = "v1.1.4";
+      sha256 = "0ma2qvn5wqvjidpdz74x832a813qnr1cxbx6n6n125ak9b3wbn5w";
     };
   }
   {
@@ -1670,8 +1670,8 @@
     fetch = {
       type = "git";
       url = "https://gopkg.in/yaml.v2";
-      rev = "v2.2.5";
-      sha256 = "08smz8dfyxp02ha74my9iszqa5qzgl3ksi28ilyp8lqipssiq6fg";
+      rev = "v2.2.8";
+      sha256 = "1inf7svydzscwv9fcjd2rm61a4xjk6jkswknybmns2n58shimapw";
     };
   }
   {
diff --git a/pkgs/applications/version-management/gitlab/gitaly/gemset.nix b/pkgs/applications/version-management/gitlab/gitaly/gemset.nix
index 3b4e4e5faa6..d91c84b1fa2 100644
--- a/pkgs/applications/version-management/gitlab/gitaly/gemset.nix
+++ b/pkgs/applications/version-management/gitlab/gitaly/gemset.nix
@@ -13,10 +13,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1s2iay17i2k0xx36cmnpbrmr5w6x70jk7fq1d8w70xcdw5chm0w1";
+      sha256 = "0zg96vjjw1kbli6nk6cyk64zfh4lgpl7fqx38ncbgfacl4dq7y0b";
       type = "gem";
     };
-    version = "5.2.3";
+    version = "6.0.2";
   };
   actionview = {
     dependencies = ["activesupport" "builder" "erubi" "rails-dom-testing" "rails-html-sanitizer"];
@@ -24,21 +24,21 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1v49rgf8305grqf6gq7qa47qhamr369igyy0giycz60x86afyr4h";
+      sha256 = "1bfh9z3n98c76c6jdp6avh75wsckxyp74r59hmgnqdhfznbkppv4";
       type = "gem";
     };
-    version = "5.2.3";
+    version = "6.0.2";
   };
   activesupport = {
-    dependencies = ["concurrent-ruby" "i18n" "minitest" "tzinfo"];
+    dependencies = ["concurrent-ruby" "i18n" "minitest" "tzinfo" "zeitwerk"];
     groups = ["default" "development" "test"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "110vp4frgkw3mpzlmshg2f2ig09cknls2w68ym1r1s39d01v0mi8";
+      sha256 = "1brlp5pmawb2hqdybjb732zxxkamcmis6px3wyh09rjlc0gqnzzz";
       type = "gem";
     };
-    version = "5.2.3";
+    version = "6.0.2";
   };
   adamantium = {
     dependencies = ["ice_nine" "memoizable"];
@@ -83,10 +83,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0qibi5s67lpdv1wgcj66wcymcr04q6j4mzws6a479n0mlrmh5wr1";
+      sha256 = "045wzckxpwcqzrjr353cxnyaxgf0qg22jh00dcx7z38cys5g1jlr";
       type = "gem";
     };
-    version = "3.2.3";
+    version = "3.2.4";
   };
   charlock_holmes = {
     source = {
@@ -137,10 +137,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "030sc98kjrb36rh7g21qsbdfxrj6knsjkx0mn3b7gig8zknwhp2f";
+      sha256 = "0pfl5c0pyqaparxaqxi6s4gfl21bdldwiawrc0aknyvflli60lfw";
       type = "gem";
     };
-    version = "1.0.5";
+    version = "1.0.6";
   };
   diff-lcs = {
     source = {
@@ -173,10 +173,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1kagnf6ziahj0d781s6ryy6fwqwa3ad4xbzzj84p9m4nv4c2jir1";
+      sha256 = "1nwzxnqhr31fn7nbqmffcysvxjdfl3bhxi0bld5qqhcnfc1xd13x";
       type = "gem";
     };
-    version = "1.8.0";
+    version = "1.9.0";
   };
   escape_utils = {
     source = {
@@ -283,10 +283,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1j06gl4ksd83rycg3fb46bb77iw74i1ivs5li6pyf5klrxjq8k3h";
+      sha256 = "1s1cgnnzlnfglsh5r0iihgvyasa2zbqkyrrnbxshvnkddb10i94z";
       type = "gem";
     };
-    version = "0.5.2";
+    version = "0.9.1";
   };
   gitlab-markup = {
     groups = ["default"];
@@ -355,10 +355,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1hfxnlyr618s25xpafw9mypa82qppjccbh292c4l3bj36az7f6wl";
+      sha256 = "0jwrd1l4mxz06iyx6053lr6hz2zy7ah2k3ranfzisvych5q19kwm";
       type = "gem";
     };
-    version = "1.6.0";
+    version = "1.8.2";
   };
   ice_nine = {
     source = {
@@ -482,12 +482,14 @@
     version = "2.4.0";
   };
   minitest = {
+    groups = ["default" "development" "test"];
+    platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0icglrhghgwdlnzzp4jf76b0mbc71s80njn5afyfjn4wqji8mqbq";
+      sha256 = "0g73x65hmjph8dg1h3rkzfg7ys3ffxm35hj35grw75fixmq53qyz";
       type = "gem";
     };
-    version = "5.11.3";
+    version = "5.14.0";
   };
   msgpack = {
     groups = ["default"];
@@ -613,10 +615,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0z90vflxbgjy2n84r7mbyax3i2vyvvrxxrf86ljzn5rw65jgnn2i";
+      sha256 = "04qa0ry26hxfwkmvhi0fjlvbm8irzg66ahnpx2pp3bl6qbdc0i8w";
       type = "gem";
     };
-    version = "2.0.7";
+    version = "2.1.2";
   };
   rack-test = {
     dependencies = ["rack"];
@@ -683,20 +685,20 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1mymdx7s5sr4mablklaipz679ckczsiigswm1g2v5mc93yj5amw3";
+      sha256 = "08v2y91q1pmv12g9zsvwj66w3s8j9d82yrmxgyv4y4gz380j3wyh";
       type = "gem";
     };
-    version = "4.1.2";
+    version = "4.1.3";
   };
   rouge = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1zsyv6abqrk7lpql5f1ja4m88bfy9qndi8xykpss6cpvjdmi3ydb";
+      sha256 = "1ipgdir89a6pp1zscl2fkb99pppa7c513pk4wvis157bn8p9hlrx";
       type = "gem";
     };
-    version = "3.11.0";
+    version = "3.15.0";
   };
   rspec = {
     dependencies = ["rspec-core" "rspec-expectations" "rspec-mocks"];
@@ -881,12 +883,14 @@
   };
   tzinfo = {
     dependencies = ["thread_safe"];
+    groups = ["default" "development" "test"];
+    platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1fjx9j327xpkkdlxwmkl3a8wqj7i4l4jwlrv3z13mg95z9wl253z";
+      sha256 = "04f18jdv6z3zn3va50rqq35nj3izjpb72fnf21ixm7vanq6nc4fp";
       type = "gem";
     };
-    version = "1.2.5";
+    version = "1.2.6";
   };
   unicode-display_width = {
     groups = ["default" "development" "test"];
@@ -926,4 +930,14 @@
     };
     version = "3.4.2";
   };
+  zeitwerk = {
+    groups = ["default" "development" "test"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0jywi63w1m2b2w9fj9rjb9n3imf6p5bfijfmml1xzdnsrdrjz0x1";
+      type = "gem";
+    };
+    version = "2.2.2";
+  };
 }
\ No newline at end of file