diff --git a/pkgs/applications/version-management/redmine/Gemfile b/pkgs/applications/version-management/redmine/Gemfile
index 30bb8cc171a3..46499b7d5953 100644
--- a/pkgs/applications/version-management/redmine/Gemfile
+++ b/pkgs/applications/version-management/redmine/Gemfile
@@ -19,10 +19,10 @@ gem 'nokogiri', (if Gem.ruby_version < Gem::Version.new('2.5.0')
                  elsif Gem.ruby_version < Gem::Version.new('2.6.0')
                    '~> 1.12.5'
                  else
-                   '~> 1.13.6'
+                   '~> 1.13.10'
                  end)
 gem 'i18n', '~> 1.8.2'
-gem "rbpdf", "~> 1.20.0"
+gem 'rbpdf', '~> 1.21.0'
 gem 'addressable'
 gem 'rubyzip', '~> 2.3.0'
 gem 'psych', '~> 3.1' if Gem.ruby_version < Gem::Version.new('2.6.0')
diff --git a/pkgs/applications/version-management/redmine/Gemfile.lock b/pkgs/applications/version-management/redmine/Gemfile.lock
index d2e9051cafb6..949742e91b7d 100644
--- a/pkgs/applications/version-management/redmine/Gemfile.lock
+++ b/pkgs/applications/version-management/redmine/Gemfile.lock
@@ -101,11 +101,11 @@ GEM
     puma (5.6.5)
       nio4r (~> 2.0)
     racc (1.6.2)
-    rack (2.2.6.3)
+    rack (2.2.6.4)
     rack-openid (1.4.2)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
-    rack-test (2.0.2)
+    rack-test (2.1.0)
       rack (>= 1.3)
     rails (5.2.8.1)
       actioncable (= 5.2.8.1)
@@ -133,7 +133,7 @@ GEM
       thor (>= 0.19.0, < 2.0)
     rainbow (3.1.1)
     rake (13.0.6)
-    rbpdf (1.20.1)
+    rbpdf (1.21.1)
       htmlentities
       rbpdf-font (~> 1.19.0)
     rbpdf-font (1.19.1)
@@ -163,7 +163,7 @@ GEM
       rubocop-ast (>= 1.2.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.27.0)
+    rubocop-ast (1.28.0)
       parser (>= 3.2.1.0)
     rubocop-performance (1.10.2)
       rubocop (>= 0.90.0, < 2.0)
@@ -226,13 +226,13 @@ DEPENDENCIES
   mocha (>= 1.4.0)
   mysql2 (~> 0.5.0)
   net-ldap (~> 0.17.0)
-  nokogiri (~> 1.13.6)
+  nokogiri (~> 1.13.10)
   pg (~> 1.2.2)
   puma (< 6.0.0)
   rack-openid
   rails (= 5.2.8.1)
   rails-dom-testing
-  rbpdf (~> 1.20.0)
+  rbpdf (~> 1.21.0)
   redcarpet (~> 3.5.1)
   request_store (~> 1.5.0)
   roadie-rails (~> 2.2.0)
diff --git a/pkgs/applications/version-management/redmine/gemset.nix b/pkgs/applications/version-management/redmine/gemset.nix
index f7340dc1de7d..1f15616d876f 100644
--- a/pkgs/applications/version-management/redmine/gemset.nix
+++ b/pkgs/applications/version-management/redmine/gemset.nix
@@ -491,10 +491,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "17wg99w29hpiq9p4cmm8c6kdg4lcw0ll2c36qw7y50gy1cs4h5j2";
+      sha256 = "1qgwkcb8kxns8d5187cxjaxf18b7dmg9gh6cr9c1125m0bj2pnfk";
       type = "gem";
     };
-    version = "2.2.6.3";
+    version = "2.2.6.4";
   };
   rack-openid = {
     dependencies = ["rack" "ruby-openid"];
@@ -513,10 +513,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0rjl709krgf499dhjdapg580l2qaj9d91pwzk8ck8fpnazlx1bdd";
+      sha256 = "1ysx29gk9k14a14zsp5a8czys140wacvp91fja8xcja0j1hzqq8c";
       type = "gem";
     };
-    version = "2.0.2";
+    version = "2.1.0";
   };
   rails = {
     dependencies = ["actioncable" "actionmailer" "actionpack" "actionview" "activejob" "activemodel" "activerecord" "activestorage" "activesupport" "railties" "sprockets-rails"];
@@ -588,10 +588,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0sdj8frakpdms820rwlil38h9bh3p24xmwnjrxsjc1p9irc3za71";
+      sha256 = "1mwpwaj6h2wwg51sd0ai4j1gn8vsl5mkvbx9bivb9sp3iqh9vi6y";
       type = "gem";
     };
-    version = "1.20.1";
+    version = "1.21.1";
   };
   rbpdf-font = {
     groups = ["default"];
@@ -724,10 +724,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "16iabkwqhzqh3cd4pcrp0nqv4ks2whcz84csawi78ynfk12vd20a";
+      sha256 = "0n2gsafg6p7nr1z8i1hkvp2qqkkbg842ba183dnl0h08xd9ms6q5";
       type = "gem";
     };
-    version = "1.27.0";
+    version = "1.28.0";
   };
   rubocop-performance = {
     dependencies = ["rubocop" "rubocop-ast"];