diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index e5c4502..6028dd3 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -8,6 +8,16 @@ updates:
       day: "monday"
     open-pull-requests-limit: 10
     labels: ["dependencies", "security"]
+    # Skip major bumps for test-infra dev deps that have known breaking
+    # changes between major versions. Re-enable when bandwidth opens to
+    # update the test suite for the new APIs. Decision: 2026-05-06,
+    # after #38 (pytest 8→9) and #40 (pytest-asyncio 0.24→1.3) failed
+    # tests with no urgency to upgrade.
+    ignore:
+      - dependency-name: "pytest"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "pytest-asyncio"
+        update-types: ["version-update:semver-major"]
     # Group patch + minor updates into a single PR per package-ecosystem.
     # Major bumps still get their own PR for human review. Mergify
     # batches the resulting PR group via .mergify.yml's "dependencies"