diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 744115355..cb84817ea 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -18,11 +18,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu-latest"]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
-        #include:
-          # only test with Python 3.10 on Windows
-        #  - os: windows-latest
-        #    python-version: "3.10"
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 4348b0d94..ece129f97 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,6 +1,6 @@
 -rrequirements.txt
 
-pytest==8.3.3
-flake8==7.1.0
-pytest-timeout==2.3.1
-pytest-aiohttp==1.0.5
+pytest==8.4.2  # version 8.4.2 is the last one supporting Python 3.9
+flake8==7.3.0
+pytest-timeout==2.4.0
+pytest-aiohttp==1.1.0
diff --git a/requirements.txt b/requirements.txt
index 5f0b26144..9c322ec53 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,13 +1,12 @@
-jsonschema>=4.23,<4.24
-aiohttp>=3.10.11,<3.11  # version 3.10.11 is the last compatible version with Python 3.8
-aiohttp-cors>=0.7.0,<0.8
-aiofiles>=24.1.0,<25.0
+jsonschema>=4.25.1,<4.26  # version 4.25.1 is the last to support Python 3.9
+aiohttp>=3.13.3,<3.14
+aiohttp-cors>=0.8.1,<0.9
+aiofiles>=25.1.0,<26.0
 Jinja2>=3.1.6,<3.2
-sentry-sdk>=2.44.0,<2.45  # optional dependency
-psutil>=7.1.3
-async-timeout>=5.0.1,<5.1
+sentry-sdk>=2.50.0,<3  # optional dependency
+psutil>=7.2.1
+async-timeout>=5.0.1,<5.1  # this library has effectively been upstreamed into Python 3.11+
 distro>=1.9.0
 py-cpuinfo>=9.0.0,<10.0
 platformdirs>=2.4.0,<3  # platformdirs >=3 conflicts when building Debian packages
-importlib-resources>=1.3; python_version < '3.9'
-truststore>=0.10.0; python_version >= '3.10'
+truststore>=0.10.4; python_version >= '3.10'