diff --git a/Casks/emacs-app-good/meta.json b/Casks/emacs-app-good/meta.json
index 7e59de60..a61135b0 100644
--- a/Casks/emacs-app-good/meta.json
+++ b/Casks/emacs-app-good/meta.json
@@ -10,7 +10,6 @@
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-  "appcast": null,
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diff --git a/Casks/emacs-app-monthly/meta.json b/Casks/emacs-app-monthly/meta.json
index bd1bdac9..30f80c75 100644
--- a/Casks/emacs-app-monthly/meta.json
+++ b/Casks/emacs-app-monthly/meta.json
@@ -10,7 +10,6 @@
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-  "appcast": null,
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diff --git a/Casks/emacs-app-nightly-28/meta.json b/Casks/emacs-app-nightly-28/meta.json
index 0dcd0383..2b83fbc1 100644
--- a/Casks/emacs-app-nightly-28/meta.json
+++ b/Casks/emacs-app-nightly-28/meta.json
@@ -10,7 +10,6 @@
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-  "appcast": null,
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diff --git a/Casks/emacs-app-nightly-29/meta.json b/Casks/emacs-app-nightly-29/meta.json
index 936f1809..c634ddd7 100644
--- a/Casks/emacs-app-nightly-29/meta.json
+++ b/Casks/emacs-app-nightly-29/meta.json
@@ -10,7 +10,6 @@
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-  "appcast": null,
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diff --git a/Casks/emacs-app-nightly/meta.json b/Casks/emacs-app-nightly/meta.json
index c5b9e0ed..7da8ff7e 100644
--- a/Casks/emacs-app-nightly/meta.json
+++ b/Casks/emacs-app-nightly/meta.json
@@ -10,7 +10,6 @@
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-  "appcast": null,
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diff --git a/Casks/emacs-app-pretest/meta.json b/Casks/emacs-app-pretest/meta.json
index 6f027d94..6cc5205a 100644
--- a/Casks/emacs-app-pretest/meta.json
+++ b/Casks/emacs-app-pretest/meta.json
@@ -10,7 +10,6 @@
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   "url_specs": {},
-  "appcast": null,
   "version": "29.1.90-pretest",
   "installed": null,
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diff --git a/Casks/emacs-app/meta.json b/Casks/emacs-app/meta.json
index e842b9bc..7a9e7fd2 100644
--- a/Casks/emacs-app/meta.json
+++ b/Casks/emacs-app/meta.json
@@ -10,7 +10,6 @@
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-  "appcast": null,
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