diff --git a/infra/config/recipes.cfg b/infra/config/recipes.cfg
index cbf14d32f..efe785f6e 100644
--- a/infra/config/recipes.cfg
+++ b/infra/config/recipes.cfg
@@ -16,7 +16,7 @@
   "deps": {
     "recipe_engine": {
       "branch": "master",
-      "revision": "5f437dc5800881abe0f78cf3b7c976817586a3ef",
+      "revision": "6d51a052a45b041e4163a01f0b6f9035f4d07b2a",
       "url": "https://chromium.googlesource.com/infra/luci/recipes-py.git"
     }
   },
diff --git a/recipes/README.recipes.md b/recipes/README.recipes.md
index 59fc533a1..b60489cf9 100644
--- a/recipes/README.recipes.md
+++ b/recipes/README.recipes.md
@@ -1084,23 +1084,23 @@ Move things around in a loop!
 
 — **def [RunSteps](/recipes/recipe_modules/windows_sdk/examples/full.py#13)(api):**
 
-[recipe_engine/recipe_modules/assertions]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-assertions
-[recipe_engine/recipe_modules/buildbucket]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-buildbucket
-[recipe_engine/recipe_modules/cipd]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-cipd
-[recipe_engine/recipe_modules/commit_position]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-commit_position
-[recipe_engine/recipe_modules/context]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-context
-[recipe_engine/recipe_modules/cq]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-cq
-[recipe_engine/recipe_modules/file]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-file
-[recipe_engine/recipe_modules/json]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-json
-[recipe_engine/recipe_modules/milo]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-milo
-[recipe_engine/recipe_modules/path]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-path
-[recipe_engine/recipe_modules/platform]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-platform
-[recipe_engine/recipe_modules/properties]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-properties
-[recipe_engine/recipe_modules/python]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-python
-[recipe_engine/recipe_modules/raw_io]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-raw_io
-[recipe_engine/recipe_modules/resultdb]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-resultdb
-[recipe_engine/recipe_modules/runtime]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-runtime
-[recipe_engine/recipe_modules/step]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-step
-[recipe_engine/recipe_modules/url]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-url
-[recipe_engine/recipe_modules/version]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/README.recipes.md#recipe_modules-version
-[recipe_engine/wkt/RecipeApi]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/5f437dc5800881abe0f78cf3b7c976817586a3ef/recipe_engine/recipe_api.py#856
+[recipe_engine/recipe_modules/assertions]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-assertions
+[recipe_engine/recipe_modules/buildbucket]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-buildbucket
+[recipe_engine/recipe_modules/cipd]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-cipd
+[recipe_engine/recipe_modules/commit_position]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-commit_position
+[recipe_engine/recipe_modules/context]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-context
+[recipe_engine/recipe_modules/cq]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-cq
+[recipe_engine/recipe_modules/file]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-file
+[recipe_engine/recipe_modules/json]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-json
+[recipe_engine/recipe_modules/milo]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-milo
+[recipe_engine/recipe_modules/path]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-path
+[recipe_engine/recipe_modules/platform]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-platform
+[recipe_engine/recipe_modules/properties]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-properties
+[recipe_engine/recipe_modules/python]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-python
+[recipe_engine/recipe_modules/raw_io]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-raw_io
+[recipe_engine/recipe_modules/resultdb]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-resultdb
+[recipe_engine/recipe_modules/runtime]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-runtime
+[recipe_engine/recipe_modules/step]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-step
+[recipe_engine/recipe_modules/url]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-url
+[recipe_engine/recipe_modules/version]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/README.recipes.md#recipe_modules-version
+[recipe_engine/wkt/RecipeApi]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/6d51a052a45b041e4163a01f0b6f9035f4d07b2a/recipe_engine/recipe_api.py#856
diff --git a/recipes/recipes.py b/recipes/recipes.py
index a49b3ee11..9b13aa570 100755
--- a/recipes/recipes.py
+++ b/recipes/recipes.py
@@ -19,7 +19,7 @@
 ** DO NOT MODIFY **
 *******************
 
-This is a copy of https://chromium.googlesource.com/infra/luci/recipes-py/+/HEAD/recipes.py.
+This is a copy of https://chromium.googlesource.com/infra/luci/recipes-py/+/master/recipes.py.
 To fix bugs, fix in the googlesource repo then run the autoroller.
 """
 
@@ -40,7 +40,7 @@ from collections import namedtuple
 # url (str) - the url to the engine repo we want to use.
 # revision (str) - the git revision for the engine to get.
 # branch (str) - the branch to fetch for the engine as an absolute ref (e.g.
-#   refs/heads/main)
+#   refs/heads/master)
 EngineDep = namedtuple('EngineDep', 'url revision branch')