diff --git a/requirements/dev.in b/requirements/dev.in
index f1f718726e..bce5461741 100644
--- a/requirements/dev.in
+++ b/requirements/dev.in
@@ -75,3 +75,6 @@ codespell
 
 # Finds appropriate directories for data, config, cache, etc.
 platformdirs
+
+# For mocking time
+time-machine
diff --git a/requirements/dev.txt b/requirements/dev.txt
index f19cda0bb3..3c1e7afaf5 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1744,6 +1744,7 @@ python-dateutil==2.8.2 \
     #   arrow
     #   botocore
     #   moto
+    #   time-machine
 python-debian==0.1.49 \
     --hash=sha256:880f3bc52e31599f2a9b432bd7691844286825087fccdcf2f6ffd5cd79a26f9f \
     --hash=sha256:8cf677a30dbcb4be7a99536c17e11308a827a4d22028dc59a67f6c6dd3f0f58c
@@ -2231,6 +2232,61 @@ tblib==1.7.0 \
 testslide==2.7.1 \
     --hash=sha256:d25890d5c383f673fac44a5f9e2561b7118d04f29f2c2b3d4f549e6db94cb34d
     # via pyre-check
+time-machine==2.9.0 \
+    --hash=sha256:010a58a8de1120308befae19e6c9de2ef5ca5206635cea33cb264998725cc027 \
+    --hash=sha256:0b9c36240876622b7f2f9e11bf72f100857c0a1e1a59af2da3d5067efea62c37 \
+    --hash=sha256:1d0ab46ce8a60baf9d86525694bf698fed9efefd22b8cbe1ca3e74abbb3239e1 \
+    --hash=sha256:2f080f6f7ca8cfca43bc5639288aebd0a273b4b5bd0acff609c2318728b13a18 \
+    --hash=sha256:359c806e5b9a7a3c73dbb808d19dca297f5504a5eefdc5d031db8d918f43e364 \
+    --hash=sha256:36dde844d28549929fab171d683c28a8db1c206547bcf6b7aca77319847d2046 \
+    --hash=sha256:372a97da01db89533d2f4ce50bbd908e5c56df7b8cfd6a005b177d0b14dc2938 \
+    --hash=sha256:3ce445775fcf7cb4040cfdba4b7c4888e7fd98bbcccfe1dc3fa8a798ed1f1d24 \
+    --hash=sha256:3ff5148e2e73392db8418a1fe2f0b06f4a0e76772933502fb61e4c3000b5324e \
+    --hash=sha256:49df5eea2160068e5b2bf28c22fc4c5aea00862ad88ddc3b62fc0f0683e97538 \
+    --hash=sha256:4b55654aaeaba380fcd6c004b8ada2978fdd4ece1e61e6b9717c6d4cc7fbbcd9 \
+    --hash=sha256:4f3755d9342ca1f1019418db52072272dfd75eb818fa4726fa8aabe208b38c26 \
+    --hash=sha256:5657e0e6077cf15b37f0d8cf78e868113bbb3ecccc60064c40fe52d8166ca8b1 \
+    --hash=sha256:60222d43f6e93a926adc36ed37a54bc8e4d0d8d1c4d449096afcfe85086129c2 \
+    --hash=sha256:6211beee9f5dace08b1bbbb1fb09e34a69c52d87eea676729f14c8660481dff6 \
+    --hash=sha256:6463e302c96eb8c691c4340e281bd54327a213b924fa189aea81accf7e7f78df \
+    --hash=sha256:68ec8b83197db32c7a12da5f6b83c91271af3ed7f5dc122d2900a8de01dff9f0 \
+    --hash=sha256:69898aed9b2315a90f5855343d9aa34d05fa06032e2e3bb14f2528941ec89dc1 \
+    --hash=sha256:6b632d60aa0883dc7292ac3d32050604d26ec2bbd5c4d42fb0de3b4ef17343e2 \
+    --hash=sha256:728263611d7940fda34d21573bd2b3f1491bdb52dbf75c5fe6c226dfe4655201 \
+    --hash=sha256:748d701228e646c224f2adfa6a11b986cd4aa90f1b8c13ef4534a3919c796bc0 \
+    --hash=sha256:8367fd03f2d7349c7fc20f14de186974eaca2502c64b948212de663742c8fd11 \
+    --hash=sha256:8670cb5cfda99f483d60de6ce56ceb0ec5d359193e79e4688e1c3c9db3937383 \
+    --hash=sha256:8830510adbf0a231184da277db9de1d55ef93ed228a575d217aaee295505abf1 \
+    --hash=sha256:8976b7b1f7de13598b655d459f5640f90f3cd587283e1b914a22e45946c5485b \
+    --hash=sha256:8bcc86b5a07ea9745f26dfad958dde0a4f56748c2ae0c9a96200a334d1b55055 \
+    --hash=sha256:8e2a90b8300812d8d774f2d2fc216fec3c7d94132ac589e062489c395061f16c \
+    --hash=sha256:8e797e5a2a99d1b237183e52251abfc1ad85c376278b39d1aca76a451a97861a \
+    --hash=sha256:948ca690f9770ad4a93fa183061c11346505598f5f0b721965bc85ec83bb103d \
+    --hash=sha256:9ba5fc2655749066d68986de8368984dad4082db2fbeade78f40506dc5b65672 \
+    --hash=sha256:9ee553f7732fa51e019e3329a6984593184c4e0410af1e73d91ce38a5d4b34ab \
+    --hash=sha256:a2cf80e5deaaa68c6cefb25303a4c870490b4e7591ed8e2435a65728920bc097 \
+    --hash=sha256:ae4e3f02ab5dabb35adca606237c7e1a515c86d69c0b7092bbe0e1cfe5cffc61 \
+    --hash=sha256:b16a2129f9146faa080bfd1b53447761f7386ec5c72890c827a65f33ab200336 \
+    --hash=sha256:b32addbf56639a9a8261fb62f8ea83473447671c83ca2c017ab1eabf4841157f \
+    --hash=sha256:b8faff03231ee55d5a216ce3e9171c5205459f866f54d4b5ee8aa1d860e4ce11 \
+    --hash=sha256:bb15b2b79b00d3f6cf7d62096f5e782fa740ecedfe0540c09f1d1e4d3d7b81ba \
+    --hash=sha256:bdbe785e046d124f73cca603ee37d5fae0b15dc4c13702488ad19de56aae08ba \
+    --hash=sha256:bfa82614a98ecee70272bb6038d210b2ad7b2a6b8a678b400c34bdaf776802a7 \
+    --hash=sha256:c01dbc3671d0649023daf623e952f9f0b4d904d57ab546d6d35a4aeb14915e8d \
+    --hash=sha256:c5dbc8b87cdc7be070a499f2bd1cd405c7f647abeb3447dfd397639df040bc64 \
+    --hash=sha256:cb51432652ad663b4cbd631c73c90f9e94f463382b86c0b6b854173700512a70 \
+    --hash=sha256:cc6bf01211b5ea40f633d5502c5aa495b415ebaff66e041820997dae70a508e1 \
+    --hash=sha256:d329578abe47ce95baa015ef3825acebb1b73b5fa6f818fdf2d4685a00ca457f \
+    --hash=sha256:d4380bd6697cc7db3c9e6843f24779ac0550affa9d9a8e5f9e5d5cc139cb6583 \
+    --hash=sha256:d79d374e32488c76cdb06fbdd4464083aeaa715ddca3e864bac7c7760eb03729 \
+    --hash=sha256:eaf334477bc0a9283d5150a56be8670a07295ef676e5b5a7f086952929d1a56b \
+    --hash=sha256:f6e79643368828d4651146a486be5a662846ac223ab5e2c73ddd519acfcc243c \
+    --hash=sha256:f92d5d2eb119a6518755c4c9170112094c706d1c604460f50afc1308eeb97f0e \
+    --hash=sha256:f97ed8bc5b517844a71030f74e9561de92f4902c306e6ccc8331a5b0c8dd0e00 \
+    --hash=sha256:fcdef7687aed5c4331c9808f4a414a41987441c3e7a2ba554e4dccfa4218e788 \
+    --hash=sha256:fd72c0b2e7443fff6e4481991742b72c17f73735e5fdd176406ca48df187a5c9 \
+    --hash=sha256:fe013942ab7f3241fcbe66ee43222d47f499d1e0cb69e913791c52e638ddd7f0
+    # via -r requirements/dev.in
 tinycss2==1.2.1 \
     --hash=sha256:2b80a96d41e7c3914b8cda8bc7f705a4d9c49275616e886103dd839dfc847847 \
     --hash=sha256:8cff3a8f066c2ec677c06dbc7b45619804a6938478d9d73c284b29d14ecb0627
diff --git a/version.py b/version.py
index 1456ff5a6d..08404890ef 100644
--- a/version.py
+++ b/version.py
@@ -48,4 +48,4 @@ API_FEATURE_LEVEL = 156
 #   historical commits sharing the same major version, in which case a
 #   minor version bump suffices.
 
-PROVISION_VERSION = (218, 0)
+PROVISION_VERSION = (218, 1)