diff --git a/.arclint b/.arclint
index 620591976..d4efa1c88 100644
--- a/.arclint
+++ b/.arclint
@@ -1,44 +1,44 @@
 {
     "linters": {
         "generated": {
             "type": "generated"
         },
         "clang-format": {
             "type": "clang-format",
             "version": "7.0",
             "bin": ["clang-format-7", "clang-format"],
             "include": "(^src/.*\\.(h|c|cpp)$)",
             "exclude": [
                 "(^src/(secp256k1|univalue|leveldb)/)"
             ]
         },
         "autopep8": {
             "type": "autopep8",
             "include": "(\\.py$)"
         },
         "flake8": {
             "type": "flake8",
             "include": "(\\.py$)",
             "flags": [
-                "--select=F401"
+                "--select=F401,F403,F405"
             ]
         },
         "lint-format-strings": {
             "type": "script-and-regex",
             "include": "(^src/.*\\.(h|c|cpp)$)",
             "exclude": [
                 "(^src/(secp256k1|univalue|leveldb)/)"
             ],
             "script-and-regex.script": "test/lint/lint-format-strings.sh",
             "script-and-regex.regex": "/^(?P<file>.+): (?P<message>.+:.+)$/m"
         },
         "check-doc": {
             "type": "check-doc",
             "include": "(^src/.*\\.(h|c|cpp)$)"
         },
         "lint-tests": {
             "type": "lint-tests",
             "include": "(^src/(rpc/|wallet/)?test/.*\\.(cpp)$)"
         }
     }
 }