diff --git a/tools/deploy b/tools/deploy
index 6da11daa..e95e97d7 100755
--- a/tools/deploy
+++ b/tools/deploy
@@ -47,7 +47,7 @@ def pack(options: argparse.Namespace) -> None:
     zip_file_path = os.path.join(bots_dir, options.botname + ".zip")
     zip_file = zipfile.ZipFile(zip_file_path, "w", zipfile.ZIP_DEFLATED)
     # Pack the complete bot folder
-    for root, dirs, files in os.walk(options.path):
+    for root, _dirs, files in os.walk(options.path):
         for file in files:
             file_path = os.path.join(root, file)
             zip_file.write(file_path, os.path.relpath(file_path, options.path))
diff --git a/zulip/integrations/zephyr/check-mirroring b/zulip/integrations/zephyr/check-mirroring
index b3c039fe..995bf1dd 100755
--- a/zulip/integrations/zephyr/check-mirroring
+++ b/zulip/integrations/zephyr/check-mirroring
@@ -126,14 +126,14 @@ except Exception:
 
 # Subscribe to Zephyrs
 zephyr_subs_to_add = []
-for stream, test in test_streams:
+for stream, _test in test_streams:
     if stream == "message":
         zephyr_subs_to_add.append((stream, "personal", mit_user))
     else:
         zephyr_subs_to_add.append((stream, "*", "*"))
 
 actually_subscribed = False
-for tries in range(10):
+for _tries in range(10):
     try:
         zephyr_ctypes.check(zephyr_ctypes.ZInitialize())
         zephyr_port = c_ushort()
@@ -236,7 +236,7 @@ def receive_zephyrs() -> None:
 logger.info("Starting sending messages!")
 # Send zephyrs
 zsig = "Timothy Good Abbott"
-for key, (stream, test) in zhkeys.items():
+for key, (stream, _test) in zhkeys.items():
     if stream == "message":
         zwrite_args = ["zwrite", "-n", "-s", zsig, mit_user]
     else:
@@ -261,7 +261,7 @@ receive_zephyrs()
 logger.info("Sent Zephyr messages!")
 
 # Send Zulips
-for key, (stream, test) in hzkeys.items():
+for key, (stream, _test) in hzkeys.items():
     if stream == "message":
         send_zulip(
             {
diff --git a/zulip/integrations/zephyr/zephyr_mirror_backend.py b/zulip/integrations/zephyr/zephyr_mirror_backend.py
index 0f620b6e..39f06c9d 100755
--- a/zulip/integrations/zephyr/zephyr_mirror_backend.py
+++ b/zulip/integrations/zephyr/zephyr_mirror_backend.py
@@ -960,7 +960,7 @@ def subscribed_to_mail_messages() -> bool:
     stored_result = os.environ.get("HUMBUG_FORWARD_MAIL_ZEPHYRS")
     if stored_result is not None:
         return stored_result == "True"
-    for cls, instance, recipient in parse_zephyr_subs(verbose=False):
+    for cls, instance, _recipient in parse_zephyr_subs(verbose=False):
         if cls.lower() == "mail" and instance.lower() == "inbox":
             os.environ["HUMBUG_FORWARD_MAIL_ZEPHYRS"] = "True"
             return True
diff --git a/zulip_bots/zulip_bots/bots/chessbot/chessbot.py b/zulip_bots/zulip_bots/bots/chessbot/chessbot.py
index e6c48cb8..2c81db14 100644
--- a/zulip_bots/zulip_bots/bots/chessbot/chessbot.py
+++ b/zulip_bots/zulip_bots/bots/chessbot/chessbot.py
@@ -568,7 +568,7 @@ def guide_with_numbers(board_str: str) -> str:
     # newline. From then on, numbers are inserted at newlines.
     row_list = list("8" + board_without_whitespace_str)
 
-    for i, char in enumerate(row_list):
+    for i, _char in enumerate(row_list):
         # `(i + 1) % 10 == 0` if it is the end of a row, i.e., the 10th column
         # since lists are 0-indexed.
         if (i + 1) % 10 == 0:
diff --git a/zulip_bots/zulip_bots/game_handler.py b/zulip_bots/zulip_bots/game_handler.py
index 51121751..cfc02997 100644
--- a/zulip_bots/zulip_bots/game_handler.py
+++ b/zulip_bots/zulip_bots/game_handler.py
@@ -766,7 +766,7 @@ To move subjects, send your message again, otherwise join the game using the lin
     def generate_game_id(self) -> str:
         id = ""
         valid_characters = "abcdefghijklmnopqrstuvwxyz0123456789"
-        for i in range(6):
+        for _i in range(6):
             id += valid_characters[random.randrange(0, len(valid_characters))]
         return id