diff --git a/.evergreen/run-tests.sh b/.evergreen/run-tests.sh
index 2b7d856d41..a9f2ba2b5c 100755
--- a/.evergreen/run-tests.sh
+++ b/.evergreen/run-tests.sh
@@ -26,12 +26,9 @@ else
 fi
 
 # List the packages.
-uv sync ${UV_ARGS} --reinstall
+uv sync ${UV_ARGS} --reinstall --quiet
 uv pip list
 
-# Ensure we go back to base environment after the test.
-trap "uv sync" EXIT HUP
-
 # Start the test runner.
 uv run ${UV_ARGS} .evergreen/scripts/run_tests.py "$@"
 
diff --git a/justfile b/justfile
index 74ebb48823..24da94a499 100644
--- a/justfile
+++ b/justfile
@@ -2,7 +2,7 @@
 set shell := ["bash", "-c"]
 
 # Commonly used command segments.
-uv_run := "uv run --isolated --frozen "
+uv_run := "uv run --frozen "
 typing_run := uv_run + "--group typing --extra aws --extra encryption --extra ocsp --extra snappy --extra test --extra zstd"
 docs_run := uv_run + "--extra docs"
 doc_build := "./doc/_build"
@@ -13,51 +13,55 @@ mypy_args := "--install-types --non-interactive"
 default:
   @just --list
 
+[private]
+resync:
+ @uv sync --quiet --frozen
+
 install:
    bash .evergreen/scripts/setup-dev-env.sh
 
 [group('docs')]
-docs:
+docs: && resync
     {{docs_run}} sphinx-build -W -b html doc {{doc_build}}/html
 
 [group('docs')]
-docs-serve:
+docs-serve: && resync
     {{docs_run}} sphinx-autobuild -W -b html doc --watch ./pymongo --watch ./bson --watch ./gridfs {{doc_build}}/serve
 
 [group('docs')]
-docs-linkcheck:
+docs-linkcheck: && resync
     {{docs_run}} sphinx-build -E -b linkcheck doc {{doc_build}}/linkcheck
 
 [group('typing')]
-typing:
+typing: && resync
     just typing-mypy
     just typing-pyright
 
 [group('typing')]
-typing-mypy:
+typing-mypy: && resync
     {{typing_run}} mypy {{mypy_args}} bson gridfs tools pymongo
     {{typing_run}} mypy {{mypy_args}} --config-file mypy_test.ini test
     {{typing_run}} mypy {{mypy_args}} test/test_typing.py test/test_typing_strict.py
 
 [group('typing')]
-typing-pyright:
+typing-pyright: && resync
     {{typing_run}} pyright test/test_typing.py test/test_typing_strict.py
     {{typing_run}} pyright -p strict_pyrightconfig.json test/test_typing_strict.py
 
 [group('lint')]
-lint:
+lint: && resync
     {{uv_run}} pre-commit run --all-files
 
 [group('lint')]
-lint-manual:
+lint-manual: && resync
     {{uv_run}} pre-commit run --all-files --hook-stage manual
 
 [group('test')]
-test *args="-v --durations=5 --maxfail=10":
+test *args="-v --durations=5 --maxfail=10": && resync
     {{uv_run}} --extra test pytest {{args}}
 
 [group('test')]
-run-tests *args:
+run-tests *args: && resync
     bash ./.evergreen/run-tests.sh {{args}}
 
 [group('test')]