diff --git a/.github/workflows/_legacy-checkpoints.yml b/.github/workflows/_legacy-checkpoints.yml
index 57610bf07cef7..84af85b6b39d9 100644
--- a/.github/workflows/_legacy-checkpoints.yml
+++ b/.github/workflows/_legacy-checkpoints.yml
@@ -51,7 +51,7 @@ defaults:
 
 jobs:
   create-legacy-ckpts:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     outputs:
       pl-version: ${{ steps.decide-version.outputs.pl-version }}
     steps:
@@ -124,7 +124,7 @@ jobs:
           aws s3 cp $AWS_RUN checkpoints.zip s3://pl-public-data/legacy/ --acl public-read
 
   add-ckpt-test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     if: inputs.create_pr
     needs: create-legacy-ckpts
     env:
diff --git a/.github/workflows/ci-tests-fabric.yml b/.github/workflows/ci-tests-fabric.yml
index 42c2b4ee476d7..b3204c71e00b7 100644
--- a/.github/workflows/ci-tests-fabric.yml
+++ b/.github/workflows/ci-tests-fabric.yml
@@ -41,13 +41,13 @@ jobs:
         include:
           # only run PyTorch latest
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
-          - { os: "ubuntu-20.04", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
+          - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
           - { os: "windows-2022", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
-          - { os: "ubuntu-20.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
+          - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
           - { os: "windows-2022", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
-          - { os: "ubuntu-20.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
+          - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
           - { os: "windows-2022", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.12.7", pytorch-version: "2.4.1" }
           - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.12.7", pytorch-version: "2.4.1" }
@@ -61,11 +61,11 @@ jobs:
           - { os: "windows-2022", pkg-name: "fabric", python-version: "3.12.7", pytorch-version: "2.6" }
           # "oldest" versions tests, only on minimum Python
           - { os: "macOS-14", pkg-name: "fabric", pytorch-version: "2.1", requires: "oldest" }
-          - { os: "ubuntu-20.04", pkg-name: "fabric", pytorch-version: "2.1", requires: "oldest" }
+          - { os: "ubuntu-22.04", pkg-name: "fabric", pytorch-version: "2.1", requires: "oldest" }
           - { os: "windows-2022", pkg-name: "fabric", pytorch-version: "2.1", requires: "oldest" }
           # "fabric" installs the standalone package
           - { os: "macOS-14", pkg-name: "fabric", python-version: "3.10", pytorch-version: "2.5" }
-          - { os: "ubuntu-20.04", pkg-name: "fabric", python-version: "3.10", pytorch-version: "2.5" }
+          - { os: "ubuntu-22.04", pkg-name: "fabric", python-version: "3.10", pytorch-version: "2.5" }
           - { os: "windows-2022", pkg-name: "fabric", python-version: "3.10", pytorch-version: "2.5" }
           # adding recently cut Torch 2.7 - FUTURE
           - { os: "macOS-14", pkg-name: "fabric", python-version: "3.12", pytorch-version: "2.7" }
diff --git a/.github/workflows/ci-tests-pytorch.yml b/.github/workflows/ci-tests-pytorch.yml
index 5720b696cbc2f..d295d5475942a 100644
--- a/.github/workflows/ci-tests-pytorch.yml
+++ b/.github/workflows/ci-tests-pytorch.yml
@@ -45,13 +45,13 @@ jobs:
         include:
           # only run PyTorch latest
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
-          - { os: "ubuntu-20.04", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
+          - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
           - { os: "windows-2022", pkg-name: "lightning", python-version: "3.10", pytorch-version: "2.1" }
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
-          - { os: "ubuntu-20.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
+          - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
           - { os: "windows-2022", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.2.2" }
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
-          - { os: "ubuntu-20.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
+          - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
           - { os: "windows-2022", pkg-name: "lightning", python-version: "3.11", pytorch-version: "2.3" }
           - { os: "macOS-14", pkg-name: "lightning", python-version: "3.12.7", pytorch-version: "2.4.1" }
           - { os: "ubuntu-22.04", pkg-name: "lightning", python-version: "3.12.7", pytorch-version: "2.4.1" }
@@ -65,11 +65,11 @@ jobs:
           - { os: "windows-2022", pkg-name: "pytorch", python-version: "3.12.7", pytorch-version: "2.6" }
           # "oldest" versions tests, only on minimum Python
           - { os: "macOS-14", pkg-name: "pytorch", pytorch-version: "2.1", requires: "oldest" }
-          - { os: "ubuntu-20.04", pkg-name: "pytorch", pytorch-version: "2.1", requires: "oldest" }
+          - { os: "ubuntu-22.04", pkg-name: "pytorch", pytorch-version: "2.1", requires: "oldest" }
           - { os: "windows-2022", pkg-name: "pytorch", pytorch-version: "2.1", requires: "oldest" }
           # "pytorch" installs the standalone package
           - { os: "macOS-14", pkg-name: "pytorch", python-version: "3.10", pytorch-version: "2.5" }
-          - { os: "ubuntu-20.04", pkg-name: "pytorch", python-version: "3.10", pytorch-version: "2.5" }
+          - { os: "ubuntu-22.04", pkg-name: "pytorch", python-version: "3.10", pytorch-version: "2.5" }
           - { os: "windows-2022", pkg-name: "pytorch", python-version: "3.10", pytorch-version: "2.5" }
           # adding recently cut Torch 2.7 - FUTURE
           - { os: "macOS-14", pkg-name: "pytorch", python-version: "3.12", pytorch-version: "2.7" }
diff --git a/.github/workflows/code-checks.yml b/.github/workflows/code-checks.yml
index 37fa432bd7887..527b605e12366 100644
--- a/.github/workflows/code-checks.yml
+++ b/.github/workflows/code-checks.yml
@@ -26,7 +26,7 @@ defaults:
 
 jobs:
   mypy:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
diff --git a/.github/workflows/docs-build.yml b/.github/workflows/docs-build.yml
index 9b2bab5ab98d4..1b02be08d0687 100644
--- a/.github/workflows/docs-build.yml
+++ b/.github/workflows/docs-build.yml
@@ -53,7 +53,7 @@ env:
 jobs:
   docs-make:
     if: github.event.pull_request.draft == false
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
@@ -149,7 +149,7 @@ jobs:
   deploy-docs:
     needs: docs-make
     if: github.repository_owner == 'Lightning-AI' && github.event_name != 'pull_request'
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/docs-tutorials.yml b/.github/workflows/docs-tutorials.yml
index 5879a7dd58744..6a768c6b9ffd9 100644
--- a/.github/workflows/docs-tutorials.yml
+++ b/.github/workflows/docs-tutorials.yml
@@ -16,7 +16,7 @@ defaults:
 
 jobs:
   docs-update:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
         with: