diff --git a/pkgs/applications/misc/taskjuggler/Gemfile.lock b/pkgs/applications/misc/taskjuggler/Gemfile.lock
index 0f05c496173f..a2312677be80 100644
--- a/pkgs/applications/misc/taskjuggler/Gemfile.lock
+++ b/pkgs/applications/misc/taskjuggler/Gemfile.lock
@@ -1,15 +1,31 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    mail (2.7.1)
+    date (3.3.3)
+    mail (2.8.1)
       mini_mime (>= 0.1.1)
-    mini_mime (1.0.1)
-    taskjuggler (3.6.0)
-      mail (>= 2.4.3)
-      term-ansicolor (>= 1.0.7)
+      net-imap
+      net-pop
+      net-smtp
+    mini_mime (1.1.2)
+    net-imap (0.3.4)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.1)
+      timeout
+    net-smtp (0.3.3)
+      net-protocol
+    sync (0.5.0)
+    taskjuggler (3.7.2)
+      mail (~> 2.7, >= 2.7.1)
+      term-ansicolor (~> 1.7, >= 1.7.1)
     term-ansicolor (1.7.1)
       tins (~> 1.0)
-    tins (1.20.2)
+    timeout (0.3.2)
+    tins (1.32.1)
+      sync
 
 PLATFORMS
   ruby
@@ -18,4 +34,4 @@ DEPENDENCIES
   taskjuggler
 
 BUNDLED WITH
-   2.1.4
+   2.4.12
diff --git a/pkgs/applications/misc/taskjuggler/gemset.nix b/pkgs/applications/misc/taskjuggler/gemset.nix
index c22d49c7dc74..a31d735ac9cf 100644
--- a/pkgs/applications/misc/taskjuggler/gemset.nix
+++ b/pkgs/applications/misc/taskjuggler/gemset.nix
@@ -1,24 +1,88 @@
 {
-  mail = {
-    dependencies = ["mini_mime"];
+  date = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "00wwz6ys0502dpk8xprwcqfwyf3hmnx6lgxaiq6vj43mkx43sapc";
+      sha256 = "03skfikihpx37rc27vr3hwrb057gxnmdzxhmzd4bf4jpkl0r55w1";
       type = "gem";
     };
-    version = "2.7.1";
+    version = "3.3.3";
+  };
+  mail = {
+    dependencies = ["mini_mime" "net-imap" "net-pop" "net-smtp"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1bf9pysw1jfgynv692hhaycfxa8ckay1gjw5hz3madrbrynryfzc";
+      type = "gem";
+    };
+    version = "2.8.1";
   };
   mini_mime = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1q4pshq387lzv9m39jv32vwb8wrq3wc4jwgl4jk209r4l33v09d3";
+      sha256 = "0lbim375gw2dk6383qirz13hgdmxlan0vc5da2l072j3qw6fqjm5";
       type = "gem";
     };
-    version = "1.0.1";
+    version = "1.1.2";
+  };
+  net-imap = {
+    dependencies = ["date" "net-protocol"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1d996zf3g8xz244791b0qsl9vr7zg4lqnnmf9k2kshr9lki5jam8";
+      type = "gem";
+    };
+    version = "0.3.4";
+  };
+  net-pop = {
+    dependencies = ["net-protocol"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1wyz41jd4zpjn0v1xsf9j778qx1vfrl24yc20cpmph8k42c4x2w4";
+      type = "gem";
+    };
+    version = "0.1.2";
+  };
+  net-protocol = {
+    dependencies = ["timeout"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0dxckrlw4q1lcn3qg4mimmjazmg9bma5gllv72f8js3p36fb3b91";
+      type = "gem";
+    };
+    version = "0.2.1";
+  };
+  net-smtp = {
+    dependencies = ["net-protocol"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1c6md06hm5bf6rv53sk54dl2vg038pg8kglwv3rayx0vk2mdql9x";
+      type = "gem";
+    };
+    version = "0.3.3";
+  };
+  sync = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1z9qlq4icyiv3hz1znvsq1wz2ccqjb1zwd6gkvnwg6n50z65d0v6";
+      type = "gem";
+    };
+    version = "0.5.0";
   };
   taskjuggler = {
     dependencies = ["mail" "term-ansicolor"];
@@ -26,10 +90,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0ky3cydl3szhdyxsy4k6zxzjlbll7mlq025aj6xd5jmh49k3pfbp";
+      sha256 = "07fagka8nl29xwwzfhxx89gp34m5hih5vnq4sha1z814004md53j";
       type = "gem";
     };
-    version = "3.6.0";
+    version = "3.7.2";
   };
   term-ansicolor = {
     dependencies = ["tins"];
@@ -42,14 +106,25 @@
     };
     version = "1.7.1";
   };
-  tins = {
+  timeout = {
     groups = ["default"];
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "1pqj45n216zrz7yckdbdknlmhh187iqzx8fp76y2h0jrgqjfkxmj";
+      sha256 = "1pfddf51n5fnj4f9ggwj3wbf23ynj0nbxlxqpz12y1gvl9g7d6r6";
       type = "gem";
     };
-    version = "1.20.2";
+    version = "0.3.2";
+  };
+  tins = {
+    dependencies = ["sync"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0373zn7zkllcn2q4ylbjgjx9mvm8m73ll3jwjav48dx8myplsp5p";
+      type = "gem";
+    };
+    version = "1.32.1";
   };
 }