diff --git a/Casks/emacs-app-good/meta.json b/Casks/emacs-app-good/meta.json
index a5727a6b..15cc22b3 100644
--- a/Casks/emacs-app-good/meta.json
+++ b/Casks/emacs-app-good/meta.json
@@ -13,7 +13,6 @@
   "appcast": null,
   "version": "2023-11-19.16ac377.master",
   "installed": null,
-  "installed_time": null,
   "outdated": false,
   "sha256": "ce34dbbd9f3086e58da234eb7ab24c41896c19c54c8fa87a0cde528950b7e039",
   "artifacts": [
diff --git a/Casks/emacs-app-monthly/meta.json b/Casks/emacs-app-monthly/meta.json
index 4ebfb189..f0a6dec9 100644
--- a/Casks/emacs-app-monthly/meta.json
+++ b/Casks/emacs-app-monthly/meta.json
@@ -13,7 +13,6 @@
   "appcast": null,
   "version": "2023-12-01.eec1142.master",
   "installed": null,
-  "installed_time": null,
   "outdated": false,
   "sha256": "09bbb4e29f6b81a553b2b2dcad74a2be2db4049c36de5409c5436066c37deecd",
   "artifacts": [
diff --git a/Casks/emacs-app-nightly-28/meta.json b/Casks/emacs-app-nightly-28/meta.json
index 1600f566..302ed396 100644
--- a/Casks/emacs-app-nightly-28/meta.json
+++ b/Casks/emacs-app-nightly-28/meta.json
@@ -13,7 +13,6 @@
   "appcast": null,
   "version": "2022-12-19.ae9bfed.emacs-28",
   "installed": null,
-  "installed_time": null,
   "outdated": false,
   "sha256": "28e611692ed2a09435a3225fa38a550954651cc8f3b116b571bd06b00dce458a",
   "artifacts": [
diff --git a/Casks/emacs-app-nightly-29/meta.json b/Casks/emacs-app-nightly-29/meta.json
index d6b95c14..272e4b9a 100644
--- a/Casks/emacs-app-nightly-29/meta.json
+++ b/Casks/emacs-app-nightly-29/meta.json
@@ -13,7 +13,6 @@
   "appcast": null,
   "version": "2023-11-14.5a1808d.emacs-29",
   "installed": null,
-  "installed_time": null,
   "outdated": false,
   "sha256": "5b346a87ef0ba7f6e46d2dbad4253ea0d1d0ecbcf8abba8274c480061cad7784",
   "artifacts": [
diff --git a/Casks/emacs-app-nightly/meta.json b/Casks/emacs-app-nightly/meta.json
index 6a03fe46..2ce4cb94 100644
--- a/Casks/emacs-app-nightly/meta.json
+++ b/Casks/emacs-app-nightly/meta.json
@@ -13,7 +13,6 @@
   "appcast": null,
   "version": "2023-12-04.e670412.master",
   "installed": null,
-  "installed_time": null,
   "outdated": false,
   "sha256": "9734b9b5cc226f4c16a8508f87d7691f742721d8926ac9d1c85d84b20c303dcd",
   "artifacts": [
diff --git a/Casks/emacs-app-pretest/meta.json b/Casks/emacs-app-pretest/meta.json
index 42dbab22..b51a1ad1 100644
--- a/Casks/emacs-app-pretest/meta.json
+++ b/Casks/emacs-app-pretest/meta.json
@@ -13,7 +13,6 @@
   "appcast": null,
   "version": "29.0.92-pretest",
   "installed": null,
-  "installed_time": null,
   "outdated": false,
   "sha256": "4150ffaa13e27d4b6c440417bd56c85fd8beb15ac1fea13733d5cbcdd5895135",
   "artifacts": [
diff --git a/Casks/emacs-app/meta.json b/Casks/emacs-app/meta.json
index 2a40e08d..0c0dc037 100644
--- a/Casks/emacs-app/meta.json
+++ b/Casks/emacs-app/meta.json
@@ -13,7 +13,6 @@
   "appcast": null,
   "version": "29.1",
   "installed": null,
-  "installed_time": null,
   "outdated": false,
   "sha256": "06975a567a038f557f88d865f438aa838a4da3a1771885b747bcd416cb85c67c",
   "artifacts": [