diff --git a/mypy.ini b/mypy.ini
index 402ff2b439..a0b3c4039e 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -25,6 +25,15 @@ local_partial_types = True
 # (The mypy daemon only supports error and skip for follow_imports)
 follow_imports = error
 
+# We use a lot of third-party libraries we don't have stubs for, as
+# well as a handful of our own modules that we haven't told mypy how
+# to find.  Ignore them.  (For some details, see:
+# `git log -p -S ignore_missing_imports mypy.ini`.)
+#
+# This doesn't get in the way of using the stubs we *do* have.
+ignore_missing_imports = True
+
+
 #
 #
 # IGNORE ERRORS
@@ -66,212 +75,6 @@ ignore_errors = True
 follow_imports = skip
 
 
-#
-#
-# IGNORE MISSING IMPORTS
-#
-#
-
-# Our code, imported relative to tools/ by scripts in that directory.
-# Mypy doesn't know that these are scripts used as __main__, and
-# doesn't find the imports.
-
-[mypy-lib,lib.*]
-ignore_missing_imports = True
-
-[mypy-zulint,zulint.*,zulint.lister.*]
-ignore_missing_imports = True
-
-
-# Our own libraries, maintained outside this repo and installed
-# through pip.  We need to tell mypy where to find them.
-
-[mypy-zulip_bots.lib]
-ignore_missing_imports = True
-
-[mypy-zulip_bots.custom_exceptions]
-ignore_missing_imports = True
-
-
-# Standard library (lex order)
-
-[mypy-ConfigParser]
-ignore_missing_imports = True
-
-[mypy-multiprocessing.sharedctypes]
-ignore_missing_imports = True
-
-[mypy-typing.re]
-ignore_missing_imports = True
-
-[mypy-unittest.result]
-ignore_missing_imports = True
-
-
-# Third-party libraries (lex order)
-
-[mypy-apiclient.sample_tools]
-ignore_missing_imports = True
-
-[mypy-apns2.*]
-ignore_missing_imports = True
-
-[mypy-bitfield,bitfield.*]
-ignore_missing_imports = True
-
-[mypy-bs4]
-ignore_missing_imports = True
-
-[mypy-coverage]
-ignore_missing_imports = True
-
-[mypy-cssutils,cssutils.*]
-ignore_missing_imports = True
-
-[mypy-defusedxml.*]
-ignore_missing_imports = True
-
-[mypy-digitalocean]
-ignore_missing_imports = True
-
-[mypy-disposable_email_domains]
-ignore_missing_imports = True
-
-[mypy-django,django.*]
-ignore_missing_imports = True
-
-[mypy-django_auth_ldap,django_auth_ldap.*]
-ignore_missing_imports = True
-
-[mypy-django_otp.*]
-ignore_missing_imports = True
-
-[mypy-django_statsd.*]
-ignore_missing_imports = True
-
-[mypy-DNS]
-ignore_missing_imports = True
-
-[mypy-gcm]
-ignore_missing_imports = True
-
-[mypy-gitlint,gitlint.*]
-ignore_missing_imports = True
-
-[mypy-httplib2]
-ignore_missing_imports = True
-
-[mypy-httpretty]
-ignore_missing_imports = True
-
-[mypy-hyper,hyper.*]
-ignore_missing_imports = True
-
-[mypy-ijson]
-ignore_missing_imports = True
-
-[mypy-ldap,fakeldap]
-ignore_missing_imports = True
-
-[mypy-libthumbor]
-ignore_missing_imports = True
-
-[mypy-lxml,lxml.*]
-ignore_missing_imports = True
-
-[mypy-markdown,markdown.*,markdown_include,markdown_include.*]
-ignore_missing_imports = True
-
-[mypy-mock]
-ignore_missing_imports = True
-
-[mypy-moto]
-ignore_missing_imports = True
-
-[mypy-netifaces]
-ignore_missing_imports = True
-
-[mypy-oauth2client.crypt]
-ignore_missing_imports = True
-
-[mypy-pika,pika.*]
-ignore_missing_imports = True
-
-[mypy-PIL,PIL.*]
-ignore_missing_imports = True
-
-[mypy-pipeline.storage]
-ignore_missing_imports = True
-
-[mypy-polib]
-ignore_missing_imports = True
-
-[mypy-premailer]
-ignore_missing_imports = True
-
-[mypy-psycopg2,psycopg2.*]
-ignore_missing_imports = True
-
-[mypy-pygments.*]
-ignore_missing_imports = True
-
-[mypy-pylibmc]
-ignore_missing_imports = True
-
-[mypy-pyoembed]
-ignore_missing_imports = True
-
-[mypy-redis]
-ignore_missing_imports = True
-
-[mypy-scrapy,scrapy.*]
-ignore_missing_imports = True
-
-[mypy-sendfile]
-ignore_missing_imports = True
-
-[mypy-six.moves.configparser]
-ignore_missing_imports = True
-
-[mypy-social_core.*]
-ignore_missing_imports = True
-
-[mypy-social_django,social_django.*]
-ignore_missing_imports = True
-
-[mypy-sockjs,sockjs.*]
-ignore_missing_imports = True
-
-[mypy-sourcemap]
-ignore_missing_imports = True
-
-[mypy-sqlalchemy,sqlalchemy.*]
-ignore_missing_imports = True
-
-[mypy-statsd]
-ignore_missing_imports = True
-
-[mypy-talon]
-ignore_missing_imports = True
-
-[mypy-tc_aws.loaders]
-ignore_missing_imports = True
-
-[mypy-thumbor.*]
-ignore_missing_imports = True
-
-[mypy-tornado,tornado.*]
-ignore_missing_imports = True
-
-[mypy-twitter]
-ignore_missing_imports = True
-
-[mypy-two_factor,two_factor.*]
-ignore_missing_imports = True
-
-
-
-
 #
 #
 # STRICT OPTIONAL