diff --git a/pkgs/servers/asterisk/default.nix b/pkgs/servers/asterisk/default.nix
index c49e5696a676..49afdf7348bd 100644
--- a/pkgs/servers/asterisk/default.nix
+++ b/pkgs/servers/asterisk/default.nix
@@ -28,7 +28,7 @@
 , libtool
 , automake
 , fetchpatch
-, python39
+, python3
 , writeScript
 , withOpus ? true
 , ldapSupport ? false
@@ -193,7 +193,7 @@ let
       })
     (lib.importJSON ./versions.json);
 
-  updateScript_python = python39.withPackages (p: with p; [ packaging beautifulsoup4 requests ]);
+  updateScript_python = python3.withPackages (p: with p; [ packaging beautifulsoup4 requests ]);
   updateScript = writeScript "asterisk-update" ''
     #!/usr/bin/env bash
     exec ${updateScript_python}/bin/python ${toString ./update.py}
diff --git a/pkgs/servers/asterisk/update.py b/pkgs/servers/asterisk/update.py
index f8804744956f..905f396284ca 100755
--- a/pkgs/servers/asterisk/update.py
+++ b/pkgs/servers/asterisk/update.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i python3 -p python39 python39.pkgs.packaging python39.pkgs.beautifulsoup4 python39.pkgs.requests
+#!nix-shell -i python3 -p python3 python3.pkgs.packaging python3.pkgs.beautifulsoup4 python3.pkgs.requests
 # mirrored in ./default.nix
 from packaging import version
 from bs4 import BeautifulSoup