diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5be2d20..3a62e33 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -96,7 +96,7 @@ jobs:
   test-node18:
     executor:
       name: node
-      version: '18.17.1' # Specify LTS version for development
+      version: '18.20'
     steps:
       - prepare
       - lint
@@ -105,7 +105,16 @@ jobs:
   test-node20:
     executor:
       name: node
-      version: '20.8'
+      version: '20.13.1' # Specify LTS version for development
+    steps:
+      - prepare
+      - lint
+      - test
+
+  test-node22:
+    executor:
+      name: node
+      version: '22.2'
     steps:
       - prepare
       - lint
@@ -121,3 +130,6 @@ workflows:
       - test-node20:
           requires:
             - audit
+      - test-node22:
+          requires:
+            - audit
diff --git a/.nvmrc b/.nvmrc
index 4a1f488..f203ab8 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-18.17.1
+20.13.1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f62d2a5..27bfada 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 ### Changed
 
 - Switch package manager from yarn to npm ([#391](https://github.com/marp-team/marpit/pull/391))
+- Upgrade development Node.js to v20 LTS ([#392](https://github.com/marp-team/marpit/pull/392))
 
 ### Removed