diff --git a/.github/workflows/_checks.yml b/.github/workflows/_checks.yml
index 305e74f..b4ba3d4 100644
--- a/.github/workflows/_checks.yml
+++ b/.github/workflows/_checks.yml
@@ -62,10 +62,9 @@ jobs:
 
   floors:
     # The declared floors are part of what we ship, and nothing else in CI installs
-    # them: `pytest` and `scheduled` both resolve highest. This leg resolves the lower
-    # bound instead, on every supported interpreter: a floor's wheel coverage is
-    # per-interpreter, so two interpreters resolving the same versions can still
-    # disagree on whether those versions install.
+    # them: `pytest` and `scheduled` both resolve highest. This leg installs them
+    # exactly on the floor Python, and the lowest versions with a wheel on every other
+    # entry (CI10).
     # 3.14t is out: no aiokafka release ships a cp314t wheel, so under --no-build this leg
     # would measure upstream's gap rather than this repo's floor. `pytest` reaches 3.14t
     # only by building the sdist with AIOKAFKA_NO_EXTENSIONS=1, which --no-build forbids.
@@ -99,7 +98,10 @@ jobs:
       - run: uv python pin ${{ matrix.python-version }}
       - run: uv venv
       # Pinned with builds allowed, so a floor with no wheel fails the wheel-only install below.
-      - run: uv pip compile pyproject.toml --all-extras --no-deps --resolution lowest-direct -o floors.txt
+      - if: matrix.python-version == '3.11'
+        run: uv pip compile pyproject.toml --all-extras --no-deps --resolution lowest-direct -o floors.txt
+      - if: matrix.python-version != '3.11'
+        run: uv pip compile pyproject.toml --all-extras --resolution lowest-direct --no-build -o floors.txt
       - run: uv pip install -r pyproject.toml --all-extras --group dev --constraints floors.txt --no-build
       # --no-cov: the coverage gate rides the resolved-highest leg in `test-ci`. This
       # one asks whether the floors work, which a coverage failure would only obscure.