diff --git a/README-asv.md b/README-asv.md
index f86225d..e246cf4 100644
--- a/README-asv.md
+++ b/README-asv.md
@@ -69,7 +69,7 @@ asv run --machine $(hostname -s) --set-commit-hash "$ITK_SHA" --python=same
 ```sh
 # Assumes ITK-base-build and ITK-head-build already exist, and the
 # itk-repo symlink points at the ITK clone.
-BASE_SHA=$(cd itk-repo && git merge-base origin/master HEAD)
+BASE_SHA=$(cd itk-repo && git merge-base origin/main HEAD)
 HEAD_SHA=$(cd itk-repo && git rev-parse HEAD)
 
 ITK_BENCHMARK_BIN=/path/to/ITK-base-build/bin \
diff --git a/asv.conf.json b/asv.conf.json
index 3049c82..5e0c01d 100644
--- a/asv.conf.json
+++ b/asv.conf.json
@@ -4,7 +4,7 @@
     "project_url": "https://itk.org/",
     "_comment_repo": "'repo' points at the ITK source tree whose commits label the time series. The caller (CI workflow or local smoke test) must create a symlink named 'itk-repo' at the root of this harness pointing to the ITK clone before invoking asv.",
     "repo": "itk-repo",
-    "branches": ["origin/master"],
+    "branches": ["origin/main"],
     "environment_type": "existing",
     "show_commit_url": "https://github.com/InsightSoftwareConsortium/ITK/commit/",
     "benchmark_dir": "benchmarks",