diff --git a/setup.cfg b/setup.cfg
index 12ad75bc..15779bfa 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,7 +32,8 @@ addopts             = tests wltp README.rst docs/code.rst
                         #--doctest-modules  --doctest-glob=README.rst
                         --cov-fail-under=69
                         # --cov=wltp.experiment --cov=wltp.model --cov=wltp.utils --cov=wltp.cycles
-                        # --pdbcls=IPython.terminal.debugger:TerminalPdb
+                        # --pdbcls=IPython.terminal.debugger:TerminalPdb  CRASH: pytest-dev/pytest#2064
+                        --pdbcls=ipdb:__main__.debugger_cls
 doctest_optionflags = NORMALIZE_WHITESPACE ELLIPSIS
 
 markers =
diff --git a/setup.py b/setup.py
index 13915331..4b5d9930 100644
--- a/setup.py
+++ b/setup.py
@@ -126,6 +126,7 @@ def clean_line(line):
     "sphinx",
     "tables",  # pandas-IO for h5
     "twine",  # for PyPi long-description check
+    "ipdb",  # for `pytest --pdb` (set in `setup.cfg`)
     ## For notebooks
     #
     "papermill",