diff --git a/Casks/emacs-app-good/meta.json b/Casks/emacs-app-good/meta.json
index a978cd88..c1313d25 100644
--- a/Casks/emacs-app-good/meta.json
+++ b/Casks/emacs-app-good/meta.json
@@ -130,7 +130,7 @@
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   "disable_replacement_formula": null,
   "disable_replacement_cask": null,
-  "tap_git_head": "1ba1583d6067b506c4938e21153256416f66fc97",
+  "tap_git_head": "9b45168adc4fc6cebdea4ff63e27c50b0f146055",
   "languages": [],
   "ruby_source_path": "Casks/emacs-app-good.rb",
   "ruby_source_checksum": {
diff --git a/Casks/emacs-app-monthly/meta.json b/Casks/emacs-app-monthly/meta.json
index 65b0ddde..3c8dd1b4 100644
--- a/Casks/emacs-app-monthly/meta.json
+++ b/Casks/emacs-app-monthly/meta.json
@@ -129,7 +129,7 @@
   "disable_reason": null,
   "disable_replacement_formula": null,
   "disable_replacement_cask": null,
-  "tap_git_head": "1ba1583d6067b506c4938e21153256416f66fc97",
+  "tap_git_head": "9b45168adc4fc6cebdea4ff63e27c50b0f146055",
   "languages": [],
   "ruby_source_path": "Casks/emacs-app-monthly.rb",
   "ruby_source_checksum": {
diff --git a/Casks/emacs-app-nightly-28/meta.json b/Casks/emacs-app-nightly-28/meta.json
index fea4b0d0..05da44c1 100644
--- a/Casks/emacs-app-nightly-28/meta.json
+++ b/Casks/emacs-app-nightly-28/meta.json
@@ -130,7 +130,7 @@
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   "disable_replacement_formula": null,
   "disable_replacement_cask": null,
-  "tap_git_head": "1ba1583d6067b506c4938e21153256416f66fc97",
+  "tap_git_head": "9b45168adc4fc6cebdea4ff63e27c50b0f146055",
   "languages": [],
   "ruby_source_path": "Casks/emacs-app-nightly-28.rb",
   "ruby_source_checksum": {
diff --git a/Casks/emacs-app-nightly-29/meta.json b/Casks/emacs-app-nightly-29/meta.json
index ed87dca3..af3c3dd3 100644
--- a/Casks/emacs-app-nightly-29/meta.json
+++ b/Casks/emacs-app-nightly-29/meta.json
@@ -130,7 +130,7 @@
   "disable_reason": null,
   "disable_replacement_formula": null,
   "disable_replacement_cask": null,
-  "tap_git_head": "1ba1583d6067b506c4938e21153256416f66fc97",
+  "tap_git_head": "9b45168adc4fc6cebdea4ff63e27c50b0f146055",
   "languages": [],
   "ruby_source_path": "Casks/emacs-app-nightly-29.rb",
   "ruby_source_checksum": {
diff --git a/Casks/emacs-app-nightly/meta.json b/Casks/emacs-app-nightly/meta.json
index 53a6c5a0..58efaddf 100644
--- a/Casks/emacs-app-nightly/meta.json
+++ b/Casks/emacs-app-nightly/meta.json
@@ -8,9 +8,9 @@
   ],
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   "homepage": "https://github.com/jimeh/emacs-builds",
-  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2025-12-18.83e8acf.master/Emacs.2025-12-18.83e8acf.master.macOS-11.arm64.dmg",
+  "url": "https://github.com/jimeh/emacs-builds/releases/download/Emacs.2025-12-19.4d11449.master/Emacs.2025-12-19.4d11449.master.macOS-11.arm64.dmg",
   "url_specs": {},
-  "version": "2025-12-18.83e8acf.master",
+  "version": "2025-12-19.4d11449.master",
   "autobump": true,
   "no_autobump_message": null,
   "skip_livecheck": false,
@@ -19,7 +19,7 @@
   "bundle_version": null,
   "bundle_short_version": null,
   "outdated": false,
-  "sha256": "2fd262aa9a8f8710987063ba7c0a21514455afd7a1ae2db982f017fda8c34ac9",
+  "sha256": "5f3153f9f7fe0843816deda470bb1c2054c3fb877cb64a2001c9aeb477d840e1",
   "artifacts": [
     {
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@@ -130,10 +130,10 @@
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   "disable_replacement_formula": null,
   "disable_replacement_cask": null,
-  "tap_git_head": "1ba1583d6067b506c4938e21153256416f66fc97",
+  "tap_git_head": "9b45168adc4fc6cebdea4ff63e27c50b0f146055",
   "languages": [],
   "ruby_source_path": "Casks/emacs-app-nightly.rb",
   "ruby_source_checksum": {
-    "sha256": "e485ecea5b142cd45c91bf954e374ae85b959fb05be02c7a0600fe7f74ec5940"
+    "sha256": "9205d7a4e91e468e4050e0ccf0ed04b4d1397bdd2c9f3e28e47c152a9152d59b"
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 }
diff --git a/Casks/emacs-app-nightly/shield.json b/Casks/emacs-app-nightly/shield.json
index 8e4b52c9..2a9f3c31 100644
--- a/Casks/emacs-app-nightly/shield.json
+++ b/Casks/emacs-app-nightly/shield.json
@@ -5,5 +5,5 @@
   "namedLogo": "GNU Emacs",
   "logoColor": "white",
   "label": "nightly",
-  "message": "2025-12-18.83e8acf.master"
+  "message": "2025-12-19.4d11449.master"
 }
diff --git a/Casks/emacs-app-pretest/meta.json b/Casks/emacs-app-pretest/meta.json
index febb9717..ae16c91a 100644
--- a/Casks/emacs-app-pretest/meta.json
+++ b/Casks/emacs-app-pretest/meta.json
@@ -130,7 +130,7 @@
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   "disable_replacement_formula": null,
   "disable_replacement_cask": null,
-  "tap_git_head": "1ba1583d6067b506c4938e21153256416f66fc97",
+  "tap_git_head": "9b45168adc4fc6cebdea4ff63e27c50b0f146055",
   "languages": [],
   "ruby_source_path": "Casks/emacs-app-pretest.rb",
   "ruby_source_checksum": {
diff --git a/Casks/emacs-app/meta.json b/Casks/emacs-app/meta.json
index 1c7ea6e8..0147b97c 100644
--- a/Casks/emacs-app/meta.json
+++ b/Casks/emacs-app/meta.json
@@ -130,7 +130,7 @@
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   "disable_replacement_formula": null,
   "disable_replacement_cask": null,
-  "tap_git_head": "1ba1583d6067b506c4938e21153256416f66fc97",
+  "tap_git_head": "9b45168adc4fc6cebdea4ff63e27c50b0f146055",
   "languages": [],
   "ruby_source_path": "Casks/emacs-app.rb",
   "ruby_source_checksum": {