diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..5ace4600
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
diff --git a/.github/workflows/ets-from-source.yml b/.github/workflows/ets-from-source.yml
index b22b04af..9a7aa33c 100644
--- a/.github/workflows/ets-from-source.yml
+++ b/.github/workflows/ets-from-source.yml
@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 env:
-  INSTALL_EDM_VERSION: 3.5.0
+  INSTALL_EDM_VERSION: 3.7.0
 
 jobs:
 
@@ -36,7 +36,7 @@ jobs:
           path: ~/.cache
           key: ${{ runner.os }}-${{ matrix.runtime }}-${{ hashFiles('etstool.py') }}
       - name: Setup EDM
-        uses: enthought/setup-edm-action@v2
+        uses: enthought/setup-edm-action@v3
         with:
           edm-version: ${{ env.INSTALL_EDM_VERSION }}
       - name: Install test environment
diff --git a/.github/workflows/test-with-edm.yml b/.github/workflows/test-with-edm.yml
index 61a77ee8..1abdccc7 100644
--- a/.github/workflows/test-with-edm.yml
+++ b/.github/workflows/test-with-edm.yml
@@ -7,7 +7,7 @@ name: Test with EDM
 on: [pull_request, workflow_dispatch]
 
 env:
-  INSTALL_EDM_VERSION: 3.5.0
+  INSTALL_EDM_VERSION: 3.7.0
 
 jobs:
 
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: ['ubuntu-latest', 'windows-latest']
-        runtime: ['3.6', '3.8']
+        runtime: ['3.8', '3.11']
 
     runs-on: ${{ matrix.os }}
     steps:
@@ -25,7 +25,7 @@ jobs:
       - name: Set up bootstrap Python (3.10)
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: '3.12'
           cache: 'pip'
           cache-dependency-path: '.github/workflows/bootstrap-requirements.txt'
       - name: Install necessary packages to the bootstrap environment
@@ -36,13 +36,13 @@ jobs:
           path: ~/.cache
           key: ${{ runner.os }}-${{ matrix.runtime }}-${{ hashFiles('etstool.py') }}
       - name: Setup EDM
-        uses: enthought/setup-edm-action@v2
+        uses: enthought/setup-edm-action@v3
         with:
           edm-version: ${{ env.INSTALL_EDM_VERSION }}
       - name: Install test environment
         run: python etstool.py install --runtime=${{ matrix.runtime }}
-      - name: Run style checks (only on Linux)
+      - name: Run style checks (only on Linux, 3.8)
         run: python etstool.py flake8 --runtime=${{ matrix.runtime }}
-        if: startsWith(matrix.os, 'ubuntu')
+        if: startsWith(matrix.os, 'ubuntu') && matrix.runtime == '3.8'
       - name: Run tests
         run: python etstool.py test --runtime=${{ matrix.runtime }}
diff --git a/.github/workflows/test-with-pip.yml b/.github/workflows/test-with-pip.yml
index 38ceb699..a2ee444d 100644
--- a/.github/workflows/test-with-pip.yml
+++ b/.github/workflows/test-with-pip.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
 
     runs-on: ${{ matrix.os }}
 
@@ -20,9 +20,14 @@ jobs:
       uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies and local packages
-      run: |
-        python -m pip install .[h5,preferences]
+    - name: Install dependencies and local packages (not macOS)
+      run: python -m pip install .[h5,preferences]
+      if: matrix.os != 'macos-latest'
+    - name: Install dependencies and local packages (macOS)
+      run: python -m pip install .[preferences]
+      # PyTables currently won't build on Apple Silicon, so exclude the h5 deps
+      # xref: enthought/apptools/issues/344
+      if: matrix.os == 'macos-latest'
     - name: Run tests
       run: |
         mkdir testdir
diff --git a/docs/releases/upcoming/339.bugfix.rst b/docs/releases/upcoming/339.bugfix.rst
new file mode 100644
index 00000000..148e390c
--- /dev/null
+++ b/docs/releases/upcoming/339.bugfix.rst
@@ -0,0 +1 @@
+Drop support for Python 3.7. (#339)
diff --git a/etstool.py b/etstool.py
index fd57037c..6988d7e7 100644
--- a/etstool.py
+++ b/etstool.py
@@ -89,7 +89,7 @@
 import click
 
 #: Supported Python versions.
-SUPPORTED_RUNTIMES = ["3.6", "3.8"]
+SUPPORTED_RUNTIMES = ["3.8", "3.11"]
 
 #: Default Python version to use.
 DEFAULT_RUNTIME = "3.8"
@@ -101,19 +101,27 @@ def edm_dependencies(runtime):
 
     Returns a set of requirement strings.
     """
-    return {
-        "flake8",
-        "flake8_ets",
-        "traitsui",
+    common_dependencies = {
         "configobj",
         "coverage",
-        "importlib_resources>=1.1.0",
-        "pytables" if runtime == "3.6" else "tables",
         "pandas",
         "pyface",
-        "enthought_sphinx_theme",
-        "sphinx",
+        "tables",
+        "traitsui",
     }
+    runtime_specific_dependencies = {
+        "3.8": {
+            # Most of these are currently unavailable on Python 3.11;
+            "enthought_sphinx_theme",
+            "flake8",
+            "flake8_ets",
+            "sphinx",
+            # importlib_resources is not needed on Python 3.11
+            "importlib_resources",
+        },
+        "3.11": set(),
+    }
+    return common_dependencies | runtime_specific_dependencies[runtime]
 
 
 # Dependencies we install from source for cron tests
@@ -178,7 +186,8 @@ def install(edm, runtime, environment, source):
     edm_packages = ' '.join(edm_dependencies(runtime))
     # edm commands to setup the development environment
     commands = [
-        "{edm} environments create {environment} --force --version={runtime}",
+        "{edm} environments create {environment} --force --version={runtime} "
+        "--platform={platform}",
         "{edm} install -y -e {environment} " + edm_packages,
         (
             "{edm} run -e {environment} -- "
@@ -477,10 +486,20 @@ def get_parameters(edm, runtime, environment):
     if edm is None:
         edm = locate_edm()
 
+    if sys.platform.startswith("win32"):
+        platform = "win-x86_64"
+    elif sys.platform.startswith("linux"):
+        platform = "rh7-x86_64" if runtime == "3.8" else "rh8-x86_64"
+    elif sys.platform.startswith("darwin"):
+        platform = "osx-x86_64"
+    else:
+        raise click.ClickException(f"platform {sys.platform} not supported")
+
     parameters = {
         'edm': edm,
         'runtime': runtime,
         'environment': environment,
+        'platform': platform,
     }
     if environment is None:
         parameters['environment'] = 'apptools-test-{runtime}'.format(
diff --git a/setup.py b/setup.py
index e0d30d49..cbd412e3 100644
--- a/setup.py
+++ b/setup.py
@@ -313,12 +313,14 @@ def get_long_description():
                 "importlib-resources>=1.1.0; python_version<'3.9'",
             ],
             "h5": [
-                "numpy",
+                # PyTables is currently incompatible with NumPy 2.0
+                # xref: enthought/apptools#345
+                "numpy < 2.0",
                 "pandas",
                 "tables",
             ],
             "persistence": [
-                "numpy",
+                "numpy < 2.0",
             ],
             "preferences": [
                 "configobj",
@@ -328,5 +330,5 @@ def get_long_description():
         packages=find_packages(),
         platforms=["Windows", "Linux", "Mac OS-X", "Unix", "Solaris"],
         zip_safe=False,
-        python_requires=">=3.6",
+        python_requires=">=3.8",
     )