diff --git a/pyproject.toml b/pyproject.toml
index f1f77d6c5a..9a11d2a75c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,6 @@ no_implicit_reexport = false
 module = [
     "ahocorasick.*",
     "aioapns.*",
-    "backoff.*",
     "bitfield.*",
     "bmemcached.*",
     "boto3.*",
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 2eb060b342..6bc6be74ae 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -80,6 +80,9 @@ backoff==1.10.0 \
     --hash=sha256:5e73e2cbe780e1915a204799dba0a01896f45f4385e636bcca7a0614d879d0cd \
     --hash=sha256:b8fba021fac74055ac05eb7c7bfce4723aedde6cd0a504e5326bcb0bdd6d19a4
     # via -r requirements/common.in
+backoff-stubs==1.10.0 \
+    --hash=sha256:03e995de0a70016c6fe758498e1ca811f1db517c00cbd06e3039c9e4f6ea2566
+    # via -r requirements/mypy.in
 beautifulsoup4==4.9.3 \
     --hash=sha256:4c98143716ef1cb40bf7f39a8e3eec8f8b009509e74904ba3a7b315431577e35 \
     --hash=sha256:84729e322ad1d5b4d25f805bfa05b902dd96450f43842c4e99067d5e1369eb25 \
diff --git a/requirements/mypy.in b/requirements/mypy.in
index b38dfffa97..652c6ce90c 100644
--- a/requirements/mypy.in
+++ b/requirements/mypy.in
@@ -4,6 +4,7 @@
 # See requirements/README.md for more detail.
 mypy
 
+backoff-stubs
 lxml-stubs
 https://github.com/andersk/pika-stubs/archive/87c5795741449e37bdbd2ceceee853fd56462440.zip#egg=pika-stubs==0.1.3+git  # https://github.com/hahow/pika-stubs/issues/1, https://github.com/hahow/pika-stubs/pull/4
 sqlalchemy-stubs
diff --git a/requirements/mypy.txt b/requirements/mypy.txt
index 8956d4598f..d4c49f9eef 100644
--- a/requirements/mypy.txt
+++ b/requirements/mypy.txt
@@ -7,6 +7,9 @@
 #
 # For details, see requirements/README.md .
 #
+backoff-stubs==1.10.0 \
+    --hash=sha256:03e995de0a70016c6fe758498e1ca811f1db517c00cbd06e3039c9e4f6ea2566
+    # via -r requirements/mypy.in
 lxml-stubs==0.2.0 \
     --hash=sha256:78f1bfb31b1f2af9a5c9e9a602ab1b589a64a5a3cc444931a39cdfd02d6864b0 \
     --hash=sha256:f0b3621ec2a23bea4145f484490c8b27383ecb407b3f8b079199ad4a0af4180b
diff --git a/version.py b/version.py
index 0eb2a09dc7..dac2c0e37f 100644
--- a/version.py
+++ b/version.py
@@ -48,4 +48,4 @@ API_FEATURE_LEVEL = 92
 #   historical commits sharing the same major version, in which case a
 #   minor version bump suffices.
 
-PROVISION_VERSION = "153.12"
+PROVISION_VERSION = "153.13"
diff --git a/zerver/lib/send_email.py b/zerver/lib/send_email.py
index 016e4c1df8..564b98b52b 100644
--- a/zerver/lib/send_email.py
+++ b/zerver/lib/send_email.py
@@ -272,7 +272,12 @@ def send_email(
         raise EmailNotDeliveredException
 
 
-@backoff.on_exception(backoff.expo, OSError, max_tries=MAX_CONNECTION_TRIES, logger=None)
+@backoff.on_exception(
+    backoff.expo,
+    OSError,
+    max_tries=MAX_CONNECTION_TRIES,
+    logger=None,  # type: ignore[arg-type] # https://github.com/gleb-chipiga/backoff-stubs/pull/2
+)
 def initialize_connection(connection: Optional[BaseEmailBackend] = None) -> BaseEmailBackend:
     if not connection:
         connection = get_connection()