diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index c718b212..d67bf4cc 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -18,14 +18,7 @@ jobs:
     strategy:
       matrix:
         operating-system:
-          [
-            ubuntu-20.04,
-            windows-latest,
-            ubuntu-22.04,
-            ubuntu-latest,
-            macos-latest,
-            macos-13
-          ]
+          [windows-latest, ubuntu-22.04, ubuntu-latest, macos-latest, macos-13]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/.github/workflows/test-graalpy.yml b/.github/workflows/test-graalpy.yml
index 9f01429e..c5eccdf3 100644
--- a/.github/workflows/test-graalpy.yml
+++ b/.github/workflows/test-graalpy.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, ubuntu-20.04, ubuntu-latest, macos-13]
+        os: [macos-latest, ubuntu-latest, macos-13]
         graalpy:
           - 'graalpy-22.3'
           - 'graalpy-23.0'
@@ -65,7 +65,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, ubuntu-20.04, ubuntu-latest, macos-13]
+        os: [macos-latest, ubuntu-latest, macos-13]
         graalpy: ['graalpy22.3', 'graalpy23.0', 'graalpy23.1', 'graalpy24.1']
 
     steps:
diff --git a/.github/workflows/test-pypy.yml b/.github/workflows/test-pypy.yml
index f9470aef..70eba194 100644
--- a/.github/workflows/test-pypy.yml
+++ b/.github/workflows/test-pypy.yml
@@ -20,8 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os:
-          [macos-latest, windows-latest, ubuntu-20.04, ubuntu-latest, macos-13]
+        os: [macos-latest, windows-latest, ubuntu-latest, macos-13]
         pypy:
           - 'pypy-2.7'
           - 'pypy-3.10'
@@ -128,8 +127,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os:
-          [macos-latest, windows-latest, ubuntu-20.04, ubuntu-latest, macos-13]
+        os: [macos-latest, windows-latest, ubuntu-latest, macos-13]
         pypy: ['pypy2.7', 'pypy3.9', 'pypy3.10-nightly']
 
     steps:
diff --git a/.github/workflows/test-python.yml b/.github/workflows/test-python.yml
index ebb5bf05..6babd2dd 100644
--- a/.github/workflows/test-python.yml
+++ b/.github/workflows/test-python.yml
@@ -21,14 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          [
-            macos-latest,
-            windows-latest,
-            ubuntu-20.04,
-            ubuntu-22.04,
-            macos-13,
-            ubuntu-latest
-          ]
+          [macos-latest, windows-latest, ubuntu-22.04, macos-13, ubuntu-latest]
         python: [3.9.13, 3.10.11, 3.11.9, 3.12.3, 3.13.0]
     steps:
       - name: Checkout
@@ -64,14 +57,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          [
-            macos-latest,
-            windows-latest,
-            ubuntu-20.04,
-            ubuntu-22.04,
-            macos-13,
-            ubuntu-latest
-          ]
+          [macos-latest, windows-latest, ubuntu-22.04, macos-13, ubuntu-latest]
         python: [3.9.13, 3.10.11, 3.11.9, 3.12.3, 3.13.0]
     steps:
       - name: Checkout
@@ -110,14 +96,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          [
-            macos-latest,
-            windows-latest,
-            ubuntu-20.04,
-            ubuntu-22.04,
-            macos-13,
-            ubuntu-latest
-          ]
+          [macos-latest, windows-latest, ubuntu-22.04, macos-13, ubuntu-latest]
         python: [3.9.13, 3.10.11, 3.11.9, 3.12.3, 3.13.0]
     steps:
       - name: Checkout
@@ -154,14 +133,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          [
-            macos-latest,
-            windows-latest,
-            ubuntu-20.04,
-            ubuntu-22.04,
-            macos-13,
-            ubuntu-latest
-          ]
+          [macos-latest, windows-latest, ubuntu-22.04, macos-13, ubuntu-latest]
         python: [3.9.13, 3.10.11, 3.11.9, '==3.12.3', 3.13.0]
     steps:
       - name: Checkout
@@ -203,14 +175,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          [
-            macos-latest,
-            windows-latest,
-            ubuntu-20.04,
-            ubuntu-22.04,
-            macos-13,
-            ubuntu-latest
-          ]
+          [macos-latest, windows-latest, ubuntu-22.04, macos-13, ubuntu-latest]
         python: [3.9.13, 3.10.11, 3.11.9, 3.12.3, 3.13.0]
     steps:
       - name: Checkout
@@ -252,14 +217,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          [
-            macos-latest,
-            windows-latest,
-            ubuntu-20.04,
-            ubuntu-22.04,
-            macos-13,
-            ubuntu-latest
-          ]
+          [macos-latest, windows-latest, ubuntu-22.04, macos-13, ubuntu-latest]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -351,14 +309,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          [
-            macos-latest,
-            windows-latest,
-            ubuntu-20.04,
-            ubuntu-22.04,
-            macos-13,
-            ubuntu-latest
-          ]
+          [macos-latest, windows-latest, ubuntu-22.04, macos-13, ubuntu-latest]
         python: ['3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
       - name: Checkout