diff --git a/.github/workflows/core-test.yml b/.github/workflows/core-test.yml
index 4becd7498..38e18aba2 100644
--- a/.github/workflows/core-test.yml
+++ b/.github/workflows/core-test.yml
@@ -25,34 +25,22 @@ jobs:
       fail-fast: true
       matrix:
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
-        numpy-version: ['1.24.4', '1.25.1', '1.26.4', '2.0.2','2.1.3', '2.2.6', '2.3.3']
-        # 1.24: 3.11, 1.25: 3.11, 1.26: 3.12
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
+        numpy-version: ['1.25.2', '1.26.4', '2.0.2','2.1.3', '2.2.6', '2.3.3']
+        # 1.25: 3.11, 1.26: 3.12
         exclude:
-           - python-version: '3.9'
-             numpy-version: '2.1.3'
-           - python-version: '3.9'
-             numpy-version: '2.2.6'
-           - python-version: '3.9'
-             numpy-version: '2.3.3'
            - python-version: '3.10'
              numpy-version: '2.3.3'
            - python-version: '3.12'
-             numpy-version: '1.24.4'
-           - python-version: '3.12'
-             numpy-version: '1.25.1'
-           - python-version: '3.13'
-             numpy-version: '1.24.4'
+             numpy-version: '1.25.2'
            - python-version: '3.13'
-             numpy-version: '1.25.1'
+             numpy-version: '1.25.2'
            - python-version: '3.13'
              numpy-version: '1.26.4'
            - python-version: '3.13'
              numpy-version: '2.0.2'
            - python-version: '3.14'
-             numpy-version: '1.24.4'
-           - python-version: '3.14'
-             numpy-version: '1.25.1'
+             numpy-version: '1.25.2'
            - python-version: '3.14'
              numpy-version: '1.26.4'
            - python-version: '3.14'
diff --git a/.github/workflows/io-test.yml b/.github/workflows/io-test.yml
index 06d9fac27..341f9e5a3 100644
--- a/.github/workflows/io-test.yml
+++ b/.github/workflows/io-test.yml
@@ -18,10 +18,10 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python-version: ['3.9', '3.14']
+        python-version: ['3.10', '3.14']
         numpy-version: ['1.26', '2.3.3']
         exclude:
-           - python-version: '3.9'
+           - python-version: '3.10'
              numpy-version: '2.3.3'
            - python-version: '3.14'
              numpy-version: '1.26'
diff --git a/neo/core/analogsignal.py b/neo/core/analogsignal.py
index 2e94cee4e..6d0ba45a7 100644
--- a/neo/core/analogsignal.py
+++ b/neo/core/analogsignal.py
@@ -15,6 +15,7 @@
 * :meth:`__array_finalize__` is called for all new objects, including those
 created by slicing. This is where attributes are copied over from
 the old object.
+
 """
 
 import logging
diff --git a/pyproject.toml b/pyproject.toml
index f0a6f676f..fd802581f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,8 +24,8 @@ classifiers = [
 
 dependencies = [
     "packaging",
-    "numpy>=1.24.4",
-    "quantities>=0.16.1"
+    "numpy>=1.25.2",
+    "quantities>=0.16.4"
 ]
 
 [project.urls]