diff --git a/core/siren-core-package-overrides.el b/core/siren-core-package-overrides.el
index f2a5477..fb4be1b 100644
--- a/core/siren-core-package-overrides.el
+++ b/core/siren-core-package-overrides.el
@@ -13,6 +13,10 @@
                 (company-nginx :type git :host github
                                :repo "emacsmirror/company-nginx"
                                :branch "master")
+                (undo-fu :type git :flavor melpa :host github
+                         :repo "emacsmirror/undo-fu")
+                (undo-fu-session :type git :flavor melpa :host github
+                                 :repo "emacsmirror/undo-fu-session")
                 ;; Override vertico recipe to fix issues with extensions.
                 (vertico :type git :host github :repo "minad/vertico"
                          :files (:defaults "extensions/*")
diff --git a/straight/versions/default.el b/straight/versions/default.el
index b6b124a..5cb71f3 100644
--- a/straight/versions/default.el
+++ b/straight/versions/default.el
@@ -57,8 +57,6 @@
  ("emacs-request" . "c769cf33f2ac0a1a9798b508935c4b260e856ab5")
  ("emacs-shfmt" . "ceb1ed4df3d7e198e4c5af0c2fd44c4d9d65832e")
  ("emacs-slim" . "3636d18ab1c8b316eea71c4732eb44743e2ded87")
- ("emacs-undo-fu" . "97e7f4f6e0754fd1b01db9638b3f534b5b4941c2")
- ("emacs-undo-fu-session" . "52c71b1cee2fe944e0013a2823e6fde10b26bc65")
  ("emacs-which-key" . "1ab1d0cc88843c9a614ed3226c5a1070e32e4823")
  ("emacsmirror-mirror" . "378111b2b7846064679a063f4eec48ef6de39ce9")
  ("emacsql" . "373975cbccf7776af771e23f86043b236a330702")
@@ -206,6 +204,8 @@
  ("treemacs" . "68fd2ddab926e2a9e3948e64803abfd02d8c40cd")
  ("treepy.el" . "3ac940e97f3d03e48ca9d7fcd74916a9b01c72f3")
  ("typescript.el" . "4f056f6db77839dc8653afff68dfecf62d83ec70")
+ ("undo-fu" . "97e7f4f6e0754fd1b01db9638b3f534b5b4941c2")
+ ("undo-fu-session" . "52c71b1cee2fe944e0013a2823e6fde10b26bc65")
  ("use-package" . "a7422fb8ab1baee19adb2717b5b47b9c3812a84c")
  ("uuidgen-el" . "7b728c1d92e196c3acf87a004949335cfc18eab3")
  ("vertico" . "c1f605305c2b569a71af5233384758271620ead3")