diff --git a/recipes/recipe_modules/osx_sdk/api.py b/recipes/recipe_modules/osx_sdk/api.py
index abf8d4f5f..5de0c78bb 100644
--- a/recipes/recipe_modules/osx_sdk/api.py
+++ b/recipes/recipe_modules/osx_sdk/api.py
@@ -15,7 +15,7 @@ from recipe_engine import recipe_api
 # implemented with a proto message.
 _PROPERTY_DEFAULTS = {
     'toolchain_pkg': 'infra/tools/mac_toolchain/${platform}',
-    'toolchain_ver': 'git_revision:248bbfc433c8e2fc4e3536d8f58477724ce7110d',
+    'toolchain_ver': 'git_revision:3e597065cb23c1fe03aeb2ebd792d83e0709c5c2',
 }
 
 # Rationalized from https://en.wikipedia.org/wiki/Xcode.
diff --git a/recipes/recipe_modules/osx_sdk/examples/full.expected/ancient_version.json b/recipes/recipe_modules/osx_sdk/examples/full.expected/ancient_version.json
index 51435769e..71fc211fd 100644
--- a/recipes/recipe_modules/osx_sdk/examples/full.expected/ancient_version.json
+++ b/recipes/recipe_modules/osx_sdk/examples/full.expected/ancient_version.json
@@ -6,7 +6,7 @@
       "-root",
       "[CACHE]/osx_sdk",
       "-ensure-file",
-      "infra/tools/mac_toolchain/${platform} git_revision:248bbfc433c8e2fc4e3536d8f58477724ce7110d",
+      "infra/tools/mac_toolchain/${platform} git_revision:3e597065cb23c1fe03aeb2ebd792d83e0709c5c2",
       "-max-threads",
       "0",
       "-json-output",
@@ -19,7 +19,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@",
       "@@@STEP_LOG_LINE@json.output@      {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:248\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:3e5\", @@@",
       "@@@STEP_LOG_LINE@json.output@        \"package\": \"infra/tools/mac_toolchain/resolved-platform\"@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    ]@@@",
diff --git a/recipes/recipe_modules/osx_sdk/examples/full.expected/automatic_version.json b/recipes/recipe_modules/osx_sdk/examples/full.expected/automatic_version.json
index 8fe7c7d96..a76acfbc3 100644
--- a/recipes/recipe_modules/osx_sdk/examples/full.expected/automatic_version.json
+++ b/recipes/recipe_modules/osx_sdk/examples/full.expected/automatic_version.json
@@ -6,7 +6,7 @@
       "-root",
       "[CACHE]/osx_sdk",
       "-ensure-file",
-      "infra/tools/mac_toolchain/${platform} git_revision:248bbfc433c8e2fc4e3536d8f58477724ce7110d",
+      "infra/tools/mac_toolchain/${platform} git_revision:3e597065cb23c1fe03aeb2ebd792d83e0709c5c2",
       "-max-threads",
       "0",
       "-json-output",
@@ -19,7 +19,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@",
       "@@@STEP_LOG_LINE@json.output@      {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:248\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:3e5\", @@@",
       "@@@STEP_LOG_LINE@json.output@        \"package\": \"infra/tools/mac_toolchain/resolved-platform\"@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    ]@@@",
diff --git a/recipes/recipe_modules/osx_sdk/examples/full.expected/explicit_version.json b/recipes/recipe_modules/osx_sdk/examples/full.expected/explicit_version.json
index a56010af7..e7d0e082f 100644
--- a/recipes/recipe_modules/osx_sdk/examples/full.expected/explicit_version.json
+++ b/recipes/recipe_modules/osx_sdk/examples/full.expected/explicit_version.json
@@ -6,7 +6,7 @@
       "-root",
       "[CACHE]/osx_sdk",
       "-ensure-file",
-      "infra/tools/mac_toolchain/${platform} git_revision:248bbfc433c8e2fc4e3536d8f58477724ce7110d",
+      "infra/tools/mac_toolchain/${platform} git_revision:3e597065cb23c1fe03aeb2ebd792d83e0709c5c2",
       "-max-threads",
       "0",
       "-json-output",
@@ -19,7 +19,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@",
       "@@@STEP_LOG_LINE@json.output@      {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:248\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:3e5\", @@@",
       "@@@STEP_LOG_LINE@json.output@        \"package\": \"infra/tools/mac_toolchain/resolved-platform\"@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    ]@@@",
diff --git a/recipes/recipe_modules/osx_sdk/examples/full.expected/mac.json b/recipes/recipe_modules/osx_sdk/examples/full.expected/mac.json
index bb9c2ad6f..3431fa42e 100644
--- a/recipes/recipe_modules/osx_sdk/examples/full.expected/mac.json
+++ b/recipes/recipe_modules/osx_sdk/examples/full.expected/mac.json
@@ -6,7 +6,7 @@
       "-root",
       "[CACHE]/osx_sdk",
       "-ensure-file",
-      "infra/tools/mac_toolchain/${platform} git_revision:248bbfc433c8e2fc4e3536d8f58477724ce7110d",
+      "infra/tools/mac_toolchain/${platform} git_revision:3e597065cb23c1fe03aeb2ebd792d83e0709c5c2",
       "-max-threads",
       "0",
       "-json-output",
@@ -19,7 +19,7 @@
       "@@@STEP_LOG_LINE@json.output@  \"result\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"\": [@@@",
       "@@@STEP_LOG_LINE@json.output@      {@@@",
-      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:248\", @@@",
+      "@@@STEP_LOG_LINE@json.output@        \"instance_id\": \"resolved-instance_id-of-git_revision:3e5\", @@@",
       "@@@STEP_LOG_LINE@json.output@        \"package\": \"infra/tools/mac_toolchain/resolved-platform\"@@@",
       "@@@STEP_LOG_LINE@json.output@      }@@@",
       "@@@STEP_LOG_LINE@json.output@    ]@@@",