diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 0b6a0a1c8..758affa13 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [16, 18]
+        node: [16, 18, 20]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [16, 18]
+        node: [16, 18, 20]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [16, 18]
+        node: [16, 18, 20]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
@@ -57,7 +57,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [16, 18]
+        node: [16, 18, 20]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
diff --git a/package-lock.json b/package-lock.json
index 802b1920a..d8ef446a6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -116,7 +116,7 @@
         "typescript": "^5.0.2"
       },
       "engines": {
-        "node": "^16 || ^18",
+        "node": "^16 || ^18 || ^20",
         "npm": "^7 || ^8 || ^9"
       }
     },
diff --git a/package.json b/package.json
index 09185626b..a4c002077 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "repository": "github:nextstrain/auspice",
   "homepage": "https://www.npmjs.com/package/auspice",
   "engines": {
-    "node": "^16 || ^18",
+    "node": "^16 || ^18 || ^20",
     "npm": "^7 || ^8 || ^9"
   },
   "bin": {