diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index c1b065670..1751fc9f6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -14,6 +14,8 @@ repos:
     hooks:
       - id: check-added-large-files
         args: [--maxkb=1024]
+        # Step captures hold a netmap per node per step and stay as recorded.
+        exclude: ^hscontrol/servertest/testdata/steps/
       - id: check-case-conflict
       - id: check-executables-have-shebangs
       - id: check-json