diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 16c26083f..d74e9eeda 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -24,6 +24,7 @@ jobs:
           - '3.10'
           - '3.11'
           - '3.12'
+          - '3.13'
     steps:
       - uses: actions/checkout@v4
       - name: create build environment
@@ -55,6 +56,8 @@ jobs:
         python-version:
           - '3.10'
           - '3.11'
+          - '3.12'
+          - '3.13'
     steps:
       - uses: actions/checkout@v4
       - name: create build environment
diff --git a/environment.yml b/environment.yml
index da24f2ee1..89514bbba 100644
--- a/environment.yml
+++ b/environment.yml
@@ -9,7 +9,6 @@ dependencies:
   - pygmo>=2.19.0  # dev, tests
   - jupyterlab  # dev, docs
   - nlopt  # dev, tests, docs
-  - pdbpp  # dev
   - pip  # dev, tests, docs
   - pytest  # dev, tests
   - pytest-cov  # tests
@@ -51,3 +50,4 @@ dependencies:
       - types-jinja2  # dev, tests
       - sqlalchemy-stubs  # dev, tests
       - sphinxcontrib-mermaid  # dev, tests, docs
+      - pdbp  # dev
diff --git a/pyproject.toml b/pyproject.toml
index deedaf17b..818055a02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Scientific/Engineering",
 ]
 authors = [
@@ -183,7 +184,7 @@ filterwarnings = [
     "ignore:The following exception was caught when calculating",
     "ignore:Usage of the parameter log_options",
 ]
-addopts = ["--doctest-modules"]
+addopts = ["--doctest-modules", "--pdbcls=pdbp:Pdb"]
 markers = [
     "wip: Tests that are work-in-progress.",
     "slow: Tests that take a long time to run and are skipped in continuous integration.",
@@ -195,9 +196,6 @@ norecursedirs = ["docs", ".tools"]
 # ======================================================================================
 # Misc configuration
 # ======================================================================================
-[tool.pytask]
-infer_latex_dependencies = true
-
 [tool.yamlfix]
 line_length = 88
 sequence_style = "block_style"
@@ -379,5 +377,6 @@ module = [
     "pathos.pools",
     "optimagic._version",
     "annotated_types",
+    "pdbp",
   ]
 ignore_missing_imports = true
diff --git a/src/estimagic/__init__.py b/src/estimagic/__init__.py
index 44a640486..056f823e4 100644
--- a/src/estimagic/__init__.py
+++ b/src/estimagic/__init__.py
@@ -1,6 +1,12 @@
+import contextlib
 import warnings
 from dataclasses import dataclass
 
+try:
+    import pdbp  # noqa: F401
+except ImportError:
+    contextlib.suppress(Exception)
+
 from estimagic import utilities
 from estimagic.bootstrap import BootstrapResult, bootstrap
 from estimagic.estimate_ml import LikelihoodResult, estimate_ml
diff --git a/src/optimagic/__init__.py b/src/optimagic/__init__.py
index 28e912234..e1cbd6a3c 100644
--- a/src/optimagic/__init__.py
+++ b/src/optimagic/__init__.py
@@ -1,5 +1,12 @@
 from __future__ import annotations
 
+import contextlib
+
+try:
+    import pdbp  # noqa: F401
+except ImportError:
+    contextlib.suppress(Exception)
+
 from optimagic import constraints, mark, utilities
 from optimagic.algorithms import algos
 from optimagic.benchmarking.benchmark_reports import (