diff --git a/.github/workflows/boards_build.yml b/.github/workflows/boards_build.yml
index d798495..2fec18a 100644
--- a/.github/workflows/boards_build.yml
+++ b/.github/workflows/boards_build.yml
@@ -12,7 +12,7 @@ jobs:
   build_boards:
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos-10.15]
+        os: [ubuntu-latest, macos-10.15]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/cargo_audit.yml b/.github/workflows/cargo_audit.yml
index 4ff71b0..ce3bc45 100644
--- a/.github/workflows/cargo_audit.yml
+++ b/.github/workflows/cargo_audit.yml
@@ -5,7 +5,7 @@ on:
 
 jobs:
   audit:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     if: github.repository == 'google/OpenSK'
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/cargo_check.yml b/.github/workflows/cargo_check.yml
index fd39614..6c58722 100644
--- a/.github/workflows/cargo_check.yml
+++ b/.github/workflows/cargo_check.yml
@@ -14,7 +14,7 @@ on:
 
 jobs:
   cargo_check:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/cargo_clippy.yml b/.github/workflows/cargo_clippy.yml
index 25aa63d..7d23474 100644
--- a/.github/workflows/cargo_clippy.yml
+++ b/.github/workflows/cargo_clippy.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   cargo_clippy:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/cargo_fmt.yml b/.github/workflows/cargo_fmt.yml
index 6e38687..0ba073f 100644
--- a/.github/workflows/cargo_fmt.yml
+++ b/.github/workflows/cargo_fmt.yml
@@ -15,7 +15,7 @@ on:
 
 jobs:
   cargo_format:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/cargo_fuzz.yml b/.github/workflows/cargo_fuzz.yml
index b71b10a..5d2703b 100644
--- a/.github/workflows/cargo_fuzz.yml
+++ b/.github/workflows/cargo_fuzz.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   build_fuzzing:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/cbor_test.yml b/.github/workflows/cbor_test.yml
index a8f1b01..4825629 100644
--- a/.github/workflows/cbor_test.yml
+++ b/.github/workflows/cbor_test.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   cbor_test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/coveralls.yml b/.github/workflows/coveralls.yml
index a750ef9..a69e464 100644
--- a/.github/workflows/coveralls.yml
+++ b/.github/workflows/coveralls.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   coveralls:
     name: OpenSK code coverage
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/crypto_test.yml b/.github/workflows/crypto_test.yml
index 50fdf88..9f1bfe6 100644
--- a/.github/workflows/crypto_test.yml
+++ b/.github/workflows/crypto_test.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   crypto_test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/heapviz_test.yml b/.github/workflows/heapviz_test.yml
index 6e7fb4f..28e0d5d 100644
--- a/.github/workflows/heapviz_test.yml
+++ b/.github/workflows/heapviz_test.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   heapviz_test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: Install ncurses
diff --git a/.github/workflows/mdlint.yml b/.github/workflows/mdlint.yml
index c697e0c..5ef4c23 100644
--- a/.github/workflows/mdlint.yml
+++ b/.github/workflows/mdlint.yml
@@ -10,7 +10,7 @@ on:
 
 jobs:
   mdlint:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: markdownlint-cli
diff --git a/.github/workflows/opensk_build.yml b/.github/workflows/opensk_build.yml
index cb2fb6f..a7e69c3 100644
--- a/.github/workflows/opensk_build.yml
+++ b/.github/workflows/opensk_build.yml
@@ -9,7 +9,7 @@ jobs:
   build_ctap2:
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos-10.15]
+        os: [ubuntu-latest, macos-10.15]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/opensk_test.yml b/.github/workflows/opensk_test.yml
index 588dab6..97c3653 100644
--- a/.github/workflows/opensk_test.yml
+++ b/.github/workflows/opensk_test.yml
@@ -10,7 +10,7 @@ on:
 jobs:
   ctap2_test:
     name: CTAP2 unit tests
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/persistent_store_test.yml b/.github/workflows/persistent_store_test.yml
index 1a1d942..a08cc81 100644
--- a/.github/workflows/persistent_store_test.yml
+++ b/.github/workflows/persistent_store_test.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   persistent_store_test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
 
diff --git a/.github/workflows/python.yml b/.github/workflows/python.yml
index daa9f99..32cde60 100644
--- a/.github/workflows/python.yml
+++ b/.github/workflows/python.yml
@@ -9,7 +9,7 @@ on:
     types: [opened, synchronize, reopened]
 jobs:
   pylint:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: [3.6, 3.7, 3.8, 3.9]
@@ -29,7 +29,7 @@ jobs:
         run: ./tools/run_pylint.sh
 
   yapf:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python 3.7
diff --git a/.github/workflows/reproducible.yml b/.github/workflows/reproducible.yml
index 060a3dd..ef0cb33 100644
--- a/.github/workflows/reproducible.yml
+++ b/.github/workflows/reproducible.yml
@@ -9,7 +9,7 @@ jobs:
   check_hashes:
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos-10.15]
+        os: [ubuntu-latest, macos-10.15]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps: