diff --git a/conda.recipe/meta.yaml b/conda.recipe/meta.yaml
index 3d335ee14..60028ed73 100755
--- a/conda.recipe/meta.yaml
+++ b/conda.recipe/meta.yaml
@@ -12,8 +12,7 @@ requirements:
     - "numpy>=1.26,<1.27"
     - "pandas>=2.2"
     - "bokeh>=2.4"
-    - "marshmallow<3.22"    # to work around paramtools bug
-    - "paramtools>=0.18.2"  # requires marshmallow>=3.0
+    - "paramtools>=0.18.3"
     - numba
     - curl
     - openpyxl
@@ -24,8 +23,7 @@ requirements:
     - "numpy>=1.26,<1.27"
     - "pandas>=2.2"
     - "bokeh>=2.4"
-    - "marshmallow<3.22"    # to work around paramtools bug
-    - "paramtools>=0.18.2"  # requires marshmallow>=3.0
+    - "paramtools>=0.18.3"
     - numba
     - curl
     - openpyxl
diff --git a/environment.yml b/environment.yml
index bf9bf569e..e848d0284 100644
--- a/environment.yml
+++ b/environment.yml
@@ -6,8 +6,6 @@ dependencies:
 - "numpy>=1.26,<1.27"
 - "pandas>=2.2"
 - "bokeh>=2.4"
-- "marshmallow<3.22"    # to work around paramtools bug
-- "paramtools>=0.18.2"  # requires marshmallow>=3.0
 - numba
 - curl
 - pytest
@@ -20,3 +18,4 @@ dependencies:
 - pip
 - pip:
     - jupyter-book
+    - "paramtools>=0.18.3"
diff --git a/setup.py b/setup.py
index c5226a8ae..3147899bd 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
         "bokeh",
         "numba",
         "requests",
-        "paramtools",
+        "paramtools>=0.18.3",
     ],
     "classifiers": [
         "Development Status :: 4 - Beta",
diff --git a/taxcalc.egg-info/PKG-INFO b/taxcalc.egg-info/PKG-INFO
index fe2a5d517..ca46bf73d 100644
--- a/taxcalc.egg-info/PKG-INFO
+++ b/taxcalc.egg-info/PKG-INFO
@@ -19,13 +19,6 @@ Classifier: Programming Language :: Python :: 3.12
 Classifier: Topic :: Software Development :: Libraries :: Python Modules
 Description-Content-Type: text/markdown
 License-File: LICENSE
-Requires-Dist: setuptools
-Requires-Dist: numpy
-Requires-Dist: pandas
-Requires-Dist: bokeh
-Requires-Dist: numba
-Requires-Dist: requests
-Requires-Dist: paramtools
 
 | | |
 | --- | --- |
diff --git a/taxcalc.egg-info/SOURCES.txt b/taxcalc.egg-info/SOURCES.txt
index b9685d567..1d6021c0a 100644
--- a/taxcalc.egg-info/SOURCES.txt
+++ b/taxcalc.egg-info/SOURCES.txt
@@ -1,7 +1,104 @@
+.coveragerc
+.gitignore
 LICENSE
 MANIFEST.in
+Makefile
+PSL_catalog.json
 README.md
+codecov.yml
+csv_show.sh
+csv_vars.sh
+environment.yml
+extend_tcja.py
+gitpr
+gitpr.bat
+gitsync
+gitsync.bat
+ppp.py
+pytest.ini
 setup.py
+tctest-nojit.sh
+.github/FUNDING.yml
+.github/workflows/build_and_test.yml
+.github/workflows/check_jupyterbook.yml
+.github/workflows/deploy_jupyterbook.yml
+.github/workflows/deploy_parameters_docs.yml
+conda.recipe/bld.bat
+conda.recipe/build.sh
+conda.recipe/meta.yaml
+docs/PSL.svg
+docs/_config.yml
+docs/_toc.yml
+docs/index.md
+docs/use_cases.md
+docs/_static/atr.png
+docs/_static/mtr.png
+docs/_static/pch.png
+docs/about/LICENSE.md
+docs/about/history.md
+docs/about/releases.md
+docs/about/roadmap.md
+docs/api/calcfunctions.rst
+docs/api/calculator.rst
+docs/api/consumption.rst
+docs/api/data.rst
+docs/api/decorators.rst
+docs/api/growdiff.rst
+docs/api/growfactors.rst
+docs/api/parameters.rst
+docs/api/policy.rst
+docs/api/public_api.rst
+docs/api/records.rst
+docs/api/taxcalcio.rst
+docs/api/utils.rst
+docs/api/utilsprvt.rst
+docs/contributing/RELEASING.md
+docs/contributing/contributor_guide.md
+docs/contributing/dependencies.md
+docs/contributing/param_naming.md
+docs/contributing/pr_workflow.md
+docs/contributing/testing.md
+docs/guide/README.md
+docs/guide/assumption_params.md
+docs/guide/cli.md
+docs/guide/index.md
+docs/guide/input_vars.md
+docs/guide/output_vars.md
+docs/guide/policy_params.md
+docs/guide/python_interface.md
+docs/guide/make/make_io_vars.py
+docs/guide/make/make_params.py
+docs/guide/make/make_uguide.py
+docs/guide/templates/assumption_params_template.md
+docs/guide/templates/input_vars_template.md
+docs/guide/templates/output_vars_template.md
+docs/guide/templates/policy_params_template.md
+docs/recipes/README.md
+docs/recipes/convert_all.sh
+docs/recipes/index.md
+docs/recipes/recipe00.ipynb
+docs/recipes/recipe01.ipynb
+docs/recipes/recipe02.ipynb
+docs/recipes/recipe03.ipynb
+docs/recipes/recipe04.ipynb
+docs/recipes/recipe04_pandas.ipynb
+docs/recipes/recipe05.ipynb
+docs/recipes/recipe06.ipynb
+docs/recipes/_static/reformA.json
+docs/recipes/_static/reformB.json
+docs/recipes/_static/reformC.json
+docs/recipes/md_src/recipe00.md
+docs/recipes/md_src/recipe01.md
+docs/recipes/md_src/recipe02.md
+docs/recipes/md_src/recipe03.md
+docs/recipes/md_src/recipe04.md
+docs/recipes/md_src/recipe04_pandas.md
+docs/recipes/md_src/recipe05.md
+docs/recipes/md_src/recipe06.md
+docs/usage/data.md
+docs/usage/overview.md
+docs/usage/starting.md
+docs/usage/tcja_after_2025.md
 taxcalc/__init__.py
 taxcalc/calcfunctions.py
 taxcalc/calculator.py
@@ -34,5 +131,115 @@ taxcalc.egg-info/dependency_links.txt
 taxcalc.egg-info/entry_points.txt
 taxcalc.egg-info/requires.txt
 taxcalc.egg-info/top_level.txt
+taxcalc/assumptions/ASSUMPTIONS.md
+taxcalc/assumptions/README.md
+taxcalc/assumptions/economic_assumptions_template.json
 taxcalc/cli/__init__.py
-taxcalc/cli/tc.py
\ No newline at end of file
+taxcalc/cli/tc.py
+taxcalc/reforms/2017_law.json
+taxcalc/reforms/2017_law.out.csv
+taxcalc/reforms/ARPA.json
+taxcalc/reforms/ARPA.out.csv
+taxcalc/reforms/BrownKhanna.json
+taxcalc/reforms/BrownKhanna.out.csv
+taxcalc/reforms/CARES.json
+taxcalc/reforms/CARES.out.csv
+taxcalc/reforms/ConsolidatedAppropriationsAct2021.json
+taxcalc/reforms/ConsolidatedAppropriationsAct2021.out.csv
+taxcalc/reforms/Larson2019.json
+taxcalc/reforms/Larson2019.out.csv
+taxcalc/reforms/README.md
+taxcalc/reforms/REFORMS.md
+taxcalc/reforms/Renacci.json
+taxcalc/reforms/Renacci.out.csv
+taxcalc/reforms/SandersDeFazio.json
+taxcalc/reforms/SandersDeFazio.out.csv
+taxcalc/reforms/TCJA.json
+taxcalc/reforms/TCJA.md
+taxcalc/reforms/TCJA.out.csv
+taxcalc/reforms/Trump2016.json
+taxcalc/reforms/Trump2016.out.csv
+taxcalc/reforms/Trump2017.json
+taxcalc/reforms/Trump2017.out.csv
+taxcalc/reforms/cases.csv
+taxcalc/reforms/clp.out.csv
+taxcalc/reforms/ext.json
+taxcalc/reforms/growfactors_ext.csv
+taxcalc/reforms/ptaxes0.json
+taxcalc/reforms/ptaxes0.out.csv
+taxcalc/reforms/ptaxes1.json
+taxcalc/reforms/ptaxes1.out.csv
+taxcalc/reforms/ptaxes2.json
+taxcalc/reforms/ptaxes2.out.csv
+taxcalc/reforms/ptaxes3.json
+taxcalc/reforms/ptaxes3.out.csv
+taxcalc/reforms/rounding2022.json
+taxcalc/reforms/rounding2022.out.csv
+taxcalc/reforms/archive/Clinton2016.json
+taxcalc/reforms/archive/RyanBrady.json
+taxcalc/reforms/archive/TCJA_House.json
+taxcalc/reforms/archive/TCJA_House_Amended.json
+taxcalc/reforms/archive/TCJA_Reconciliation.json
+taxcalc/reforms/archive/TCJA_Senate.json
+taxcalc/reforms/archive/TCJA_Senate_111417.json
+taxcalc/reforms/archive/TCJA_Senate_120117.json
+taxcalc/tests/benefits_expect.csv
+taxcalc/tests/cmpi_cps_expect.txt
+taxcalc/tests/cmpi_puf_expect.txt
+taxcalc/tests/conftest.py
+taxcalc/tests/cpscsv_agg_expect.csv
+taxcalc/tests/puf_var_correl_coeffs_2016.csv
+taxcalc/tests/puf_var_wght_means_by_year.csv
+taxcalc/tests/pufcsv_agg_expect.csv
+taxcalc/tests/pufcsv_mtr_expect.txt
+taxcalc/tests/reforms.json
+taxcalc/tests/reforms_expect.csv
+taxcalc/tests/test_4package.py
+taxcalc/tests/test_benefits.py
+taxcalc/tests/test_calcfunctions.py
+taxcalc/tests/test_calculator.py
+taxcalc/tests/test_compare.py
+taxcalc/tests/test_compatible_data.py
+taxcalc/tests/test_consumption.py
+taxcalc/tests/test_cpscsv.py
+taxcalc/tests/test_data.py
+taxcalc/tests/test_decorators.py
+taxcalc/tests/test_growdiff.py
+taxcalc/tests/test_growfactors.py
+taxcalc/tests/test_parameters.py
+taxcalc/tests/test_policy.py
+taxcalc/tests/test_puf_var_stats.py
+taxcalc/tests/test_pufcsv.py
+taxcalc/tests/test_records.py
+taxcalc/tests/test_reforms.py
+taxcalc/tests/test_responses.py
+taxcalc/tests/test_taxcalcio.py
+taxcalc/tests/test_tmdcsv.py
+taxcalc/tests/test_utils.py
+taxcalc/validation/CSV_INPUT_VARS.md
+taxcalc/validation/CSV_OUTPUT_VARS.md
+taxcalc/validation/README.md
+taxcalc/validation/tests_35.sh
+taxcalc/validation/taxsim35/Differences_Explained.md
+taxcalc/validation/taxsim35/README.md
+taxcalc/validation/taxsim35/input_setup.py
+taxcalc/validation/taxsim35/main_comparison.py
+taxcalc/validation/taxsim35/prepare_taxcalc_input.py
+taxcalc/validation/taxsim35/process_taxcalc_output.py
+taxcalc/validation/taxsim35/taxsim_emulation.json
+taxcalc/validation/taxsim35/taxsim_input.py
+taxcalc/validation/taxsim35/tc_sims.py
+taxcalc/validation/taxsim35/tests_35.py
+taxcalc/validation/taxsim35/expected_differences/a17-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/a18-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/a19-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/a20-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/a21-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/b17-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/b18-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/b19-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/b20-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/b21-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/c17-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/c18-taxdiffs-expect.csv
+taxcalc/validation/taxsim35/expected_differences/c19-taxdiffs-expect.csv
\ No newline at end of file