diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 132813f..d454030 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
   build:
     needs: prepare
     name: Build and Test (${{ matrix.preset.description }})
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     strategy:
       fail-fast: false
       matrix:
@@ -75,7 +75,7 @@ jobs:
 
   build-ext:
     name: Build and Test (external dependencies)
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     permissions:
       contents: read
     steps:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 47a5ad2..408e840 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -13,7 +13,7 @@ on:
 jobs:
   analyze:
     name: Analyze
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     timeout-minutes: 60
     permissions:
       security-events: write
diff --git a/.github/workflows/ctest.yml b/.github/workflows/ctest.yml
index 17e95cf..d6ab03f 100644
--- a/.github/workflows/ctest.yml
+++ b/.github/workflows/ctest.yml
@@ -37,7 +37,7 @@ jobs:
   test:
     needs: prepare
     name: Test (${{ matrix.script }})
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
     strategy:
       fail-fast: false
       matrix: