diff --git a/.github/workflows/run_unit_tests.yml b/.github/workflows/run_unit_tests.yml
index 1ee0cc75..27a39c76 100644
--- a/.github/workflows/run_unit_tests.yml
+++ b/.github/workflows/run_unit_tests.yml
@@ -7,7 +7,7 @@ on:
   push:
     branches: [ master ]
   pull_request:
-    branches: [ master ]
+    branches: [ "master", "v*dev" ]
 
 jobs:
   build:
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         dependencies: [".", "'.[libjpeg]'"]
 
     steps:
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index b2b59411..00000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,6 +0,0 @@
-include src/highdicom/*
-include src/highdicom/legacy/*
-include src/highdicom/sc/*
-include src/highdicom/seg/*
-include src/highdicom/sr/*
-include src/highdicom/_icc_profiles/*
diff --git a/pyproject.toml b/pyproject.toml
index a6c9f2be..b71c189d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Multimedia :: Graphics",
     "Topic :: Scientific/Engineering :: Information Analysis",
 ]
@@ -62,6 +63,12 @@ homepage = "https://github.com/imagingdatacommons/highdicom"
 documentation = "https://highdicom.readthedocs.io/"
 repository = "https://github.com/ImagingDataCommons/highdicom.git"
 
+[tool.setuptools.packages.find]
+where = [ "src" ]
+
+[tool.setuptools.package-data]
+highdicom = [ "**/*.icc" ]
+
 [tool.pytest.ini_options]
 minversion = "7"
 addopts = ["--doctest-modules", "-ra", "--strict-config", "--strict-markers"]