diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c45d99a..8b23921 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -50,12 +50,12 @@ jobs:
     - run: bash scripts/ci/run
 
     - if: matrix.platform == 'ubuntu-latest'  # no need to compute coverage for other platforms
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: .coverage.mypy-misc_${{ matrix.platform }}_${{ matrix.python-version }}
         path: .coverage.mypy-misc/
     - if: matrix.platform == 'ubuntu-latest'  # no need to compute coverage for other platforms
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: .coverage.mypy-core_${{ matrix.platform }}_${{ matrix.python-version }}
         path: .coverage.mypy-core/
diff --git a/tests/bluemaestro.py b/tests/bluemaestro.py
index 1416900..283bd77 100644
--- a/tests/bluemaestro.py
+++ b/tests/bluemaestro.py
@@ -1,13 +1,26 @@
-#!/usr/bin/env python3
 from pathlib import Path
+from typing import TYPE_CHECKING, Iterator, Any
+
 from more_itertools import one
 
-import pytest # type: ignore
+import pytest
+
+
+if TYPE_CHECKING:
+    from my.bluemaestro import Measurement
+else:
+    Measurement = Any
+
+
+def ok_measurements() -> Iterator[Measurement]:
+    from my.bluemaestro import measurements
+    for m in measurements():
+        assert not isinstance(m, Exception)
+        yield m
 
 
 def test() -> None:
-    from my.bluemaestro import measurements
-    res2020 = [m for m in measurements() if '2020' in str(m.dt)]
+    res2020 = [m for m in ok_measurements() if '2020' in str(m.dt)]
 
     tp = [x for x in res2020 if x.temp == 2.1]
     assert len(tp) > 0
@@ -24,8 +37,7 @@ def test() -> None:
 
 
 def test_old_db() -> None:
-    from my.bluemaestro import measurements
-    res = list(measurements())
+    res = list(ok_measurements())
 
     r1 = one(x for x in res if x.dt.strftime('%Y%m%d %H:%M:%S') == '20181003 09:07:00')
     r2 = one(x for x in res if x.dt.strftime('%Y%m%d %H:%M:%S') == '20181003 09:19:00')
diff --git a/tests/jawbone.py b/tests/jawbone.py
index c53459d..776ac50 100644
--- a/tests/jawbone.py
+++ b/tests/jawbone.py
@@ -4,7 +4,7 @@ from datetime import date, time
 
 # todo private test.. move away
 def test_tz() -> None:
-    from my.jawbone import sleeps_by_date
+    from my.jawbone import sleeps_by_date  # type: ignore[attr-defined]
     sleeps = sleeps_by_date()
     for s in sleeps.values():
         assert s.sleep_start.tzinfo is not None
diff --git a/tests/pdfs.py b/tests/pdfs.py
index d5134bf..ae6318d 100644
--- a/tests/pdfs.py
+++ b/tests/pdfs.py
@@ -23,7 +23,8 @@ def test_with_error(with_config, tmp_path: Path) -> None:
     g = root / 'garbage.pdf'
     g.write_text('garbage')
     from my.config import pdfs
-    del pdfs.roots  # meh. otherwise legacy config value 'wins'
+    # meh. otherwise legacy config value 'wins'
+    del pdfs.roots  # type: ignore[attr-defined]
     pdfs.paths = (root,)
 
     from my.pdfs import annotations
diff --git a/tests/takeout.py b/tests/takeout.py
index f45a51d..7cc2164 100644
--- a/tests/takeout.py
+++ b/tests/takeout.py
@@ -13,7 +13,7 @@ from more_itertools import ilen
 def test_location_perf() -> None:
     # 2.80 s for 10 iterations and 10K points
     # TODO try switching to jq and see how it goes? not sure..
-    print(ilen(islice(LT.iter_locations(), 0, 10000)))
+    print(ilen(islice(LT.iter_locations(), 0, 10000)))  # type: ignore
 
 
 # in theory should support any HTML takeout file?
diff --git a/tests/test_tmp_config.py b/tests/test_tmp_config.py
index eb26e54..197d3f7 100644
--- a/tests/test_tmp_config.py
+++ b/tests/test_tmp_config.py
@@ -6,11 +6,11 @@ from my.core.cfg import tmp_config
 import pytest
 
 
-def _init_default_config():
+def _init_default_config() -> None:
     import my.config
     class default_config:
         count = 5
-    my.config.simple = default_config  # type: ignore[attr-defined]
+    my.config.simple = default_config  # type: ignore[attr-defined,assignment,misc]
 
 
 def test_tmp_config() -> None:
diff --git a/tox.ini b/tox.ini
index a8af102..6e7ca23 100644
--- a/tox.ini
+++ b/tox.ini
@@ -80,7 +80,7 @@ allowlist_externals = cat
 commands =
     pip install -e .[testing,optional]
     pip install orgparse # used it core.orgmode?
-    # todo add tests?
+
     {envpython} -m mypy --install-types --non-interactive \
                     -p my.core \
                     --txt-report  .coverage.mypy-core \
@@ -88,10 +88,16 @@ commands =
                     {posargs}
     cat .coverage.mypy-core/index.txt
 
+    # todo hmm might be better to move modules test in a separate subpackage?
+    {envpython} -m mypy --install-types --non-interactive \
+                    tests \
+                    --exclude 'tests/(bluemaestro|emfit|takeout|pdfs|jawbone).py'
+
 
 # specific modules that are known to be mypy compliant (to avoid false negatives)
 # todo maybe split into separate jobs? need to add comment how to run
 [testenv:mypy-misc]
+allowlist_externals = cat
 commands =
     pip install -e .[testing,optional]
 
@@ -132,6 +138,10 @@ commands =
                     --html-report .coverage.mypy-misc \
                     {posargs}
     # txt report is a bit more convenient to view on CI
+    cat .coverage.mypy-misc/index.txt
+
+    {envpython} -m mypy --install-types --non-interactive \
+                    tests
 
 # note: this comment doesn't seem relevant anymore, but keeping it in case the issue happens again
 # > ugh ... need to reset HOME, otherwise user's site-packages are somehow leaking into mypy's path...