diff --git a/.github/workflows/build-conda.yml b/.github/workflows/build-conda.yml
index fb137106..025f5a42 100644
--- a/.github/workflows/build-conda.yml
+++ b/.github/workflows/build-conda.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest, windows-latest, macos-12]
     steps:
     - uses: actions/checkout@v4
@@ -26,7 +26,7 @@ jobs:
       run: |
         conda create --name TEST python=${{ matrix.python-version }} numpy cython pip pytest wheel pyproj eccodes --strict-channel-priority
         source activate TEST
-        pip install -e . --no-deps --force-reinstall
+        python -m pip install -e . --no-deps --force-reinstall
         conda info --all
         conda list
 
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index a338cef8..5ec7f9ef 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [windows-latest, macos-latest]
         platform: [x64, x32]
         exclude:
@@ -32,7 +32,7 @@ jobs:
       run: |
         conda create --name TEST python=${{ matrix.python-version }} numpy cython pip pytest wheel pyproj eccodes --strict-channel-priority
         source activate TEST
-        pip install -e . --no-deps --force-reinstall
+        python -m pip install -e . --no-deps --force-reinstall
         conda info --all
         conda list
 
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5580af44..2beae570 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,7 +9,7 @@ jobs:
       PROJ_LIB: /usr/share/proj
     strategy:
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.13"]
     steps:
 
     - uses: actions/checkout@v4
@@ -31,18 +31,23 @@ jobs:
     - name: Install some dependencies via pip
       run: |
         # Install pyspharm using a few tricks
-        pip install numpy setuptools wheel
-        FFLAGS="-fallow-argument-mismatch" pip install --no-use-pep517 pyspharm
+        python -m pip install numpy setuptools wheel build meson-python
+        #FFLAGS="-fallow-argument-mismatch" python -m pip install --no-use-pep517 pyspharm
+        git clone https://github.com/jswhit/pyspharm
+        cd pyspharm
+        python -m build .
+        python -m pip install dist/*whl
+        cd ..
         # for later building/checking
-        pip install build twine
-        pip install check-manifest
+        python -m pip install build twine
+        python -m pip install check-manifest
         # below here only needed for mpl/cartopy based tests
-        pip install pytest-mpl
-        pip install cartopy
+        python -m pip install pytest-mpl
+        python -m pip install cartopy
 
     - name: Install pygrib
       run: |
-        pip install -e .
+        python -m pip install -e .
 
     - name: Test
       run: |
diff --git a/pyproject.toml b/pyproject.toml
index 124dd713..914d0d8e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,17 +14,16 @@ readme = "README.md"
 authors = [
   {name = "Jeff Whitaker", email = "jeffrey.s.whitaker@noaa.gov"},
 ]
-requires-python = ">=3.7"
+requires-python = ">=3.9"
 license = {text = "MIT"}
 classifiers = [
     "Development Status :: 4 - Beta",
     "Programming Language :: Python :: 3",
-    "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",
     "Intended Audience :: Science/Research",
     "License :: OSI Approved :: MIT License",
     "Topic :: Software Development :: Libraries :: Python Modules",