diff --git a/requirements-dev.in b/requirements-dev.in
index 1dce965..045d223 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -23,6 +23,7 @@ coverage
 opendp[polars]
 # For Python 3.9:
 scipy<1.14
+contourpy<1.3.1
 
 # Conversion:
 jupytext
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 77d3e9f..2238e20 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -25,7 +25,7 @@ beautifulsoup4==4.12.3
     # via nbconvert
 black==24.10.0
     # via -r requirements-dev.in
-bleach==6.1.0
+bleach==6.2.0
     # via nbconvert
 build==1.2.2.post1
     # via pip-tools
@@ -44,12 +44,14 @@ click==8.1.7
 comm==0.2.2
     # via ipykernel
 contourpy==1.3.0
-    # via matplotlib
-coverage==7.6.3
+    # via
+    #   -r requirements-dev.in
+    #   matplotlib
+coverage==7.6.8
     # via -r requirements-dev.in
 cycler==0.12.1
     # via matplotlib
-debugpy==1.8.7
+debugpy==1.8.9
     # via ipykernel
 decorator==5.1.1
     # via ipython
@@ -71,23 +73,23 @@ flake8==7.1.1
     # via
     #   -r requirements-dev.in
     #   flake8-bugbear
-flake8-bugbear==24.8.19
+flake8-bugbear==24.10.31
     # via -r requirements-dev.in
-flit==3.9.0
+flit==3.10.1
     # via -r requirements-dev.in
-flit-core==3.9.0
+flit-core==3.10.1
     # via flit
-fonttools==4.54.1
+fonttools==4.55.0
     # via matplotlib
-greenlet==3.0.3
+greenlet==3.1.1
     # via playwright
 h11==0.14.0
     # via uvicorn
-htmltools==0.5.3
+htmltools==0.6.0
     # via
     #   faicons
     #   shiny
-identify==2.6.1
+identify==2.6.2
     # via pre-commit
 idna==3.10
     # via
@@ -99,7 +101,7 @@ ipykernel==6.29.5
     # via -r requirements-dev.in
 ipython==8.18.0
     # via ipykernel
-jedi==0.19.1
+jedi==0.19.2
     # via ipython
 jinja2==3.1.4
     # via nbconvert
@@ -134,7 +136,7 @@ markdown-it-py==3.0.0
     #   jupytext
     #   mdit-py-plugins
     #   shiny
-markupsafe==3.0.1
+markupsafe==3.0.2
     # via
     #   jinja2
     #   nbconvert
@@ -156,6 +158,8 @@ mistune==3.0.2
     # via nbconvert
 mypy-extensions==1.0.0
     # via black
+narwhals==1.14.2
+    # via shiny
 nbclient==0.10.0
     # via nbconvert
 nbconvert==7.16.4
@@ -176,13 +180,14 @@ numpy==1.26.4
     #   contourpy
     #   matplotlib
     #   opendp
-    #   pyarrow
     #   randomgen
     #   scikit-learn
     #   scipy
 opendp[polars]==0.11.1
     # via -r requirements-dev.in
-packaging==24.1
+orjson==3.10.12
+    # via shiny
+packaging==24.2
     # via
     #   black
     #   build
@@ -210,7 +215,7 @@ platformdirs==4.3.6
     #   black
     #   jupyter-core
     #   virtualenv
-playwright==1.47.0
+playwright==1.49.0
     # via pytest-playwright
 pluggy==1.5.0
     # via pytest
@@ -223,13 +228,13 @@ prompt-toolkit==3.0.36
     #   ipython
     #   questionary
     #   shiny
-psutil==6.0.0
+psutil==6.1.0
     # via ipykernel
 ptyprocess==0.7.0
     # via pexpect
 pure-eval==0.2.3
     # via stack-data
-pyarrow==17.0.0
+pyarrow==18.0.0
     # via opendp
 pycodestyle==2.12.1
     # via flake8
@@ -262,7 +267,7 @@ python-dateutil==2.9.0.post0
     # via
     #   jupyter-client
     #   matplotlib
-python-multipart==0.0.12
+python-multipart==0.0.17
     # via shiny
 python-slugify==8.0.4
     # via pytest-playwright
@@ -287,7 +292,7 @@ requests==2.32.3
     # via
     #   flit
     #   pytest-base-url
-rpds-py==0.20.0
+rpds-py==0.21.0
     # via
     #   jsonschema
     #   referencing
@@ -297,12 +302,11 @@ scipy==1.13.1
     # via
     #   -r requirements-dev.in
     #   scikit-learn
-shiny==1.1.0
+shiny==1.2.1
     # via -r requirements-dev.in
 six==1.16.0
     # via
     #   asttokens
-    #   bleach
     #   python-dateutil
 sniffio==1.3.1
     # via anyio
@@ -310,17 +314,17 @@ soupsieve==2.6
     # via beautifulsoup4
 stack-data==0.6.3
     # via ipython
-starlette==0.41.0
+starlette==0.41.3
     # via shiny
 text-unidecode==1.3
     # via python-slugify
 threadpoolctl==3.5.0
     # via scikit-learn
-tinycss2==1.3.0
+tinycss2==1.4.0
     # via nbconvert
 tomli-w==1.1.0
     # via flit
-tornado==6.4.1
+tornado==6.4.2
     # via
     #   ipykernel
     #   jupyter-client
@@ -345,11 +349,11 @@ uc-micro-py==1.0.3
     # via linkify-it-py
 urllib3==2.2.3
     # via requests
-uvicorn==0.32.0
+uvicorn==0.32.1
     # via shiny
-virtualenv==20.26.6
+virtualenv==20.27.1
     # via pre-commit
-watchfiles==0.24.0
+watchfiles==1.0.0
     # via shiny
 wcwidth==0.2.13
     # via prompt-toolkit
@@ -357,9 +361,9 @@ webencodings==0.5.1
     # via
     #   bleach
     #   tinycss2
-websockets==13.1
+websockets==14.1
     # via shiny
-wheel==0.44.0
+wheel==0.45.1
     # via pip-tools
 
 # The following packages are considered to be unsafe in a requirements file: