diff --git a/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/Gemfile.lock b/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/Gemfile.lock
index d5622c0ac37..d31b4afe519 100644
--- a/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/Gemfile.lock
+++ b/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.1.4)
+    activesupport (6.1.4.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
@@ -24,4 +24,4 @@ DEPENDENCIES
   rrule (= 0.4.2)
 
 BUNDLED WITH
-   2.2.20
+   2.2.24
diff --git a/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/default.nix b/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/default.nix
index b610a5c21a1..a437f293fa6 100644
--- a/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/default.nix
+++ b/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/default.nix
@@ -6,8 +6,8 @@ mkDiscoursePlugin {
   src = fetchFromGitHub {
     owner = "discourse";
     repo = "discourse-calendar";
-    rev = "519cf403ae3003291de20145aca243e2ffbcb4a2";
-    sha256 = "0398cf7k03i7j7v5w1mysjzk2npbkvr7icj5sjwa8i8xzg34gck4";
+    rev = "2f76cdd3064735d484be1df77f43100aca21aea6";
+    sha256 = "1skpc8p5br1jkii1rksha1q95ias6xxyvi5bnli3q41w7fz1h5j2";
   };
   meta = with lib; {
     homepage = "https://github.com/discourse/discourse-calendar";
diff --git a/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/gemset.nix b/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/gemset.nix
index 26db0e6fd10..4f1e4c100c0 100644
--- a/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/gemset.nix
+++ b/pkgs/servers/web-apps/discourse/plugins/discourse-calendar/gemset.nix
@@ -5,10 +5,10 @@
     platforms = [];
     source = {
       remotes = ["https://rubygems.org"];
-      sha256 = "0kqgywy4cj3h5142dh7pl0xx5nybp25jn0ykk0znziivzks68xdk";
+      sha256 = "19gx1jcq46x9d1pi1w8xq0bgvvfw239y4lalr8asm291gj3q3ds4";
       type = "gem";
     };
-    version = "6.1.4";
+    version = "6.1.4.1";
   };
   concurrent-ruby = {
     groups = ["default"];