diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 3c3e5d6..83b1f86 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -16,25 +16,23 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+    - name: Install package
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
-        if (Test-Path requirements.txt) { python -m pip install -r requirements.txt }
+        python -m pip install ".[test]" flake8
     - name: Lint with flake8
       run: |
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
- #   - name: Test with pytest
- #     run: |
- #       pytest TODO need to turn off my env var first
+    - name: Test with pytest
+      run: python -m pytest -m "not integration"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c18f45c..61b23c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+[0.1.5] - 2026-08-05
+--------------------
+
+**Changed**
+- Corrected the supported Python range to 3.9 through 3.14
+- Removed the NumPy 1.x restriction to support NumPy 2
+- Made CI install ESApp and run the offline test suite across every supported Python version
+
 [0.1.4] - 2026-06-05
 --------------------
 
diff --git a/VERSION b/VERSION
index 845639e..9faa1b7 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.4
+0.1.5
diff --git a/pyproject.toml b/pyproject.toml
index 4271d8e..00f2f73 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ name = "esapp"
 dynamic = ["version"]
 description = "ESA++ is an open-source power-grid toolkit."
 readme = "README.rst"
-requires-python = ">=3.7"
+requires-python = ">=3.9"
 license = {text = "Apache License 2.0"}
 authors = [
     {name = "Adam Birchfield", email = "abirchfield@tamu.edu"},
@@ -31,10 +31,12 @@ keywords = [
 ]
 classifiers = [
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.7",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
     "License :: OSI Approved :: Apache Software License",
     "Operating System :: Microsoft :: Windows",
     "Development Status :: 5 - Production/Stable",
@@ -49,7 +51,7 @@ classifiers = [
 ]
 dependencies = [
     "pandas",
-    "numpy<2.0",
+    "numpy",
     "scipy",
     "pywin32; sys_platform == 'win32'",
 ]