diff --git a/pkgs/by-name/sl/slack/update.sh b/pkgs/by-name/sl/slack/update.sh
index c54a9a5e7c29..1001f3e1c32a 100755
--- a/pkgs/by-name/sl/slack/update.sh
+++ b/pkgs/by-name/sl/slack/update.sh
@@ -6,25 +6,20 @@ set -euo pipefail
 cd $(readlink -e $(dirname "${BASH_SOURCE[0]}"))
 
 aarch64_darwin_data=$(curl -s 'https://slack.com/api/desktop.latestRelease?arch=arm64&variant=dmg')
-x86_64_darwin_data=$(curl -s 'https://slack.com/api/desktop.latestRelease?arch=x64&variant=dmg')
 x86_64_linux_data=$(curl -s 'https://slack.com/api/desktop.latestRelease?arch=x64&variant=deb')
 
 aarch64_darwin_version=$(jq -r .version <<< "$aarch64_darwin_data")
-x86_64_darwin_version=$(jq -r .version <<< "$x86_64_darwin_data")
 x86_64_linux_version=$(jq -r .version <<< "$x86_64_linux_data")
 
 aarch64_darwin_url=$(jq -r .download_url <<< "$aarch64_darwin_data")
-x86_64_darwin_url=$(jq -r .download_url <<< "$x86_64_darwin_data")
 x86_64_linux_url=$(jq -r .download_url <<< "$x86_64_linux_data")
 
 aarch64_darwin_hash=$(nix-prefetch-url "$aarch64_darwin_url")
-x86_64_darwin_hash=$(nix-prefetch-url "$x86_64_darwin_url")
 x86_64_linux_hash=$(nix-prefetch-url "$x86_64_linux_url")
 
 # use friendlier hashes
 
 aarch64_darwin_hash=$(nix --extra-experimental-features nix-command hash convert --to sri --hash-algo sha256 "$aarch64_darwin_hash")
-x86_64_darwin_hash=$(nix --extra-experimental-features nix-command hash convert --to sri --hash-algo sha256 "$x86_64_darwin_hash")
 x86_64_linux_hash=$(nix --extra-experimental-features nix-command hash convert --to sri --hash-algo sha256 "$x86_64_linux_hash")
 
 cat >sources.nix <<EOF
@@ -39,13 +34,6 @@ cat >sources.nix <<EOF
       hash = "$aarch64_darwin_hash";
     };
   };
-  x86_64-darwin = {
-    version = "$x86_64_darwin_version";
-    src = fetchurl {
-      url = "$x86_64_darwin_url";
-      hash = "$x86_64_darwin_hash";
-    };
-  };
   x86_64-linux = {
     version = "$x86_64_linux_version";
     src = fetchurl {