--- a/pyproject.toml
+++ b/pyproject.toml
@@ -138,7 +138,6 @@ ckeygen = "twisted.conch.scripts.ckeygen
 conch = "twisted.conch.scripts.conch:run"
 mailmail = "twisted.mail.scripts.mailmail:run"
 pyhtmlizer = "twisted.scripts.htmlizer:run"
-tkconch = "twisted.conch.scripts.tkconch:run"
 trial = "twisted.scripts.trial:run"
 twist = "twisted.application.twist._twist:Twist.main"
 twistd = "twisted.scripts.twistd:run"
--- a/src/twisted/python/twisted-completion.zsh
+++ b/src/twisted/python/twisted-completion.zsh
@@ -1,4 +1,4 @@
-#compdef twist twistd trial conch cftp ckeygen pyhtmlizer tkconch
+#compdef twist twistd trial conch cftp ckeygen pyhtmlizer
 #
 # This is the ZSH completion file for Twisted commands. It calls the current
 # command-line with the special "--_shell-completion" option which is handled
