diff --git a/.github/workflows/node-test.yml b/.github/workflows/node-test.yml
index 8b5c9ebac1e..b58c4c6e81d 100644
--- a/.github/workflows/node-test.yml
+++ b/.github/workflows/node-test.yml
@@ -24,9 +24,9 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - "18"
+          - "20"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v3
@@ -44,10 +44,10 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - "16"
           - "18"
+          - "20"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
@@ -59,7 +59,7 @@ jobs:
       - run: npm test -- -- --forbid-only
 
       - uses: codecov/codecov-action@v3
-        if: matrix.node-version == '16'
+        if: matrix.node-version == '20'
 
   integration:
     needs: unit
@@ -79,7 +79,7 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - "18"
+          - "20"
         script:
           - npm run test:client-integration
           - npm run test:emulator
@@ -94,7 +94,7 @@ jobs:
           - npm run test:triggers-end-to-end
           - npm run test:triggers-end-to-end:inspect
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
@@ -135,7 +135,7 @@ jobs:
       fail-fast: false
       matrix:
         node-version:
-          - "18"
+          - "20"
         script:
           - npm run test:hosting
           # - npm run test:hosting-rewrites # Long-running test that might conflict across test runs. Run this manually.
@@ -155,7 +155,7 @@ jobs:
           java-version: 17
           distribution: temurin
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node-version }}
@@ -184,10 +184,10 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - "18"
+          - "20"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
@@ -203,10 +203,10 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - "18"
+          - "20"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
@@ -222,10 +222,10 @@ jobs:
     strategy:
       matrix:
         node-version:
-          - "18"
+          - "20"
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index f6d806cd9d1..3de048b9325 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -161,7 +161,7 @@
         "vite": "^4.2.1"
       },
       "engines": {
-        "node": ">=16.13.0 || >=18.0.0"
+        "node": ">=18.0.0 || >=20.0.0"
       }
     },
     "node_modules/@ampproject/remapping": {
diff --git a/package.json b/package.json
index ac446a29f97..d000f012859 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
   ],
   "preferGlobal": true,
   "engines": {
-    "node": ">=16.13.0 || >=18.0.0"
+    "node": ">=18.0.0 || >=20.0.0"
   },
   "author": "Firebase (https://firebase.google.com/)",
   "license": "MIT",
diff --git a/scripts/build/Dockerfile b/scripts/build/Dockerfile
index bb873786daf..a71132b8dae 100644
--- a/scripts/build/Dockerfile
+++ b/scripts/build/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:18
+FROM node:20
 
 # Install dependencies
 RUN apt-get update && \
diff --git a/scripts/emulator-tests/functions/package.json b/scripts/emulator-tests/functions/package.json
index 09efcb47ffb..97967bd5a20 100644
--- a/scripts/emulator-tests/functions/package.json
+++ b/scripts/emulator-tests/functions/package.json
@@ -9,6 +9,6 @@
     "firebase-functions": "^4.0.0"
   },
   "engines": {
-    "node": "16"
+    "node": "20"
   }
 }
diff --git a/scripts/examples/hosting/update-single-file/package.json b/scripts/examples/hosting/update-single-file/package.json
index f6d9d62f6a9..d8b04fe454f 100644
--- a/scripts/examples/hosting/update-single-file/package.json
+++ b/scripts/examples/hosting/update-single-file/package.json
@@ -12,7 +12,7 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "author": "",
   "license": "MIT",
diff --git a/scripts/extensions-emulator-tests/functions/package.json b/scripts/extensions-emulator-tests/functions/package.json
index e692cd76b04..9e498b4aea0 100644
--- a/scripts/extensions-emulator-tests/functions/package.json
+++ b/scripts/extensions-emulator-tests/functions/package.json
@@ -3,7 +3,7 @@
   "description": "Cloud Functions for Firebase",
   "scripts": {},
   "engines": {
-    "node": "14"
+    "node": "20"
   },
   "dependencies": {
     "firebase-admin": "^9.3.0",
diff --git a/scripts/firepit-builder/Dockerfile b/scripts/firepit-builder/Dockerfile
index c35b8dd6aae..e4fdd363785 100644
--- a/scripts/firepit-builder/Dockerfile
+++ b/scripts/firepit-builder/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:18
+FROM node:20
 
 # Install dependencies
 RUN apt-get update && \
diff --git a/scripts/functions-deploy-tests/functions/package.json b/scripts/functions-deploy-tests/functions/package.json
index 94834d41623..6c010cae45f 100644
--- a/scripts/functions-deploy-tests/functions/package.json
+++ b/scripts/functions-deploy-tests/functions/package.json
@@ -11,7 +11,7 @@
     "firebase-functions": "^4.1.0"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "private": true
 }
diff --git a/scripts/functions-discover-tests/fixtures/bundled/dist/package.json b/scripts/functions-discover-tests/fixtures/bundled/dist/package.json
index 364e1e20f6d..e356900fb54 100644
--- a/scripts/functions-discover-tests/fixtures/bundled/dist/package.json
+++ b/scripts/functions-discover-tests/fixtures/bundled/dist/package.json
@@ -2,6 +2,6 @@
   "name": "dist",
   "version": "0.0.1",
   "engines": {
-    "node": "16"
+    "node": "20"
   }
 }
diff --git a/scripts/functions-discover-tests/fixtures/bundled/package.json b/scripts/functions-discover-tests/fixtures/bundled/package.json
index 72a92e6258a..88420ade881 100644
--- a/scripts/functions-discover-tests/fixtures/bundled/package.json
+++ b/scripts/functions-discover-tests/fixtures/bundled/package.json
@@ -5,6 +5,6 @@
     "firebase-functions": "^4.1.1"
   },
   "engines": {
-    "node": "16"
+    "node": "20"
   }
 }
\ No newline at end of file
diff --git a/scripts/functions-discover-tests/fixtures/codebases/v1/package.json b/scripts/functions-discover-tests/fixtures/codebases/v1/package.json
index e57e928a5e2..8bd6863b7cb 100644
--- a/scripts/functions-discover-tests/fixtures/codebases/v1/package.json
+++ b/scripts/functions-discover-tests/fixtures/codebases/v1/package.json
@@ -4,6 +4,6 @@
     "firebase-functions": "^4.0.0"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   }
 }
diff --git a/scripts/functions-discover-tests/fixtures/codebases/v2/package.json b/scripts/functions-discover-tests/fixtures/codebases/v2/package.json
index 63b1894db29..732e1665c3c 100644
--- a/scripts/functions-discover-tests/fixtures/codebases/v2/package.json
+++ b/scripts/functions-discover-tests/fixtures/codebases/v2/package.json
@@ -5,6 +5,6 @@
     "firebase-functions": "^4.0.0"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   }
 }
diff --git a/scripts/functions-discover-tests/fixtures/esm/functions/package.json b/scripts/functions-discover-tests/fixtures/esm/functions/package.json
index bdd9f5344f5..4073fb49d90 100644
--- a/scripts/functions-discover-tests/fixtures/esm/functions/package.json
+++ b/scripts/functions-discover-tests/fixtures/esm/functions/package.json
@@ -5,6 +5,6 @@
     "firebase-functions": "^4.0.0"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   }
 }
diff --git a/scripts/functions-discover-tests/fixtures/pnpm/functions/package.json b/scripts/functions-discover-tests/fixtures/pnpm/functions/package.json
index 58ff3bbce4d..bc017fc70e5 100644
--- a/scripts/functions-discover-tests/fixtures/pnpm/functions/package.json
+++ b/scripts/functions-discover-tests/fixtures/pnpm/functions/package.json
@@ -4,6 +4,6 @@
     "firebase-functions": "^4.0.0"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   }
 }
diff --git a/scripts/functions-discover-tests/fixtures/simple/functions/package.json b/scripts/functions-discover-tests/fixtures/simple/functions/package.json
index b62715e92f1..1a25153f9e9 100644
--- a/scripts/functions-discover-tests/fixtures/simple/functions/package.json
+++ b/scripts/functions-discover-tests/fixtures/simple/functions/package.json
@@ -4,6 +4,6 @@
     "firebase-functions": "^4.0.0"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   }
 }
diff --git a/scripts/functions-discover-tests/fixtures/yarn-workspaces/packages/functions/package.json b/scripts/functions-discover-tests/fixtures/yarn-workspaces/packages/functions/package.json
index cb4bf923d8a..e46713f5d50 100644
--- a/scripts/functions-discover-tests/fixtures/yarn-workspaces/packages/functions/package.json
+++ b/scripts/functions-discover-tests/fixtures/yarn-workspaces/packages/functions/package.json
@@ -7,7 +7,7 @@
     "@firebase/a-test-pkg": "0.0.1"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "private": true
 }
diff --git a/scripts/test-project/functions/package.json b/scripts/test-project/functions/package.json
index 4221129235a..dbe43654f7f 100644
--- a/scripts/test-project/functions/package.json
+++ b/scripts/test-project/functions/package.json
@@ -6,6 +6,6 @@
     "firebase-functions": "^3.2.0"
   },
   "engines": {
-    "node": "12"
+    "node": "20"
   }
 }
diff --git a/scripts/triggers-end-to-end-tests/triggers/package.json b/scripts/triggers-end-to-end-tests/triggers/package.json
index 53631f02926..6911ca48e2c 100644
--- a/scripts/triggers-end-to-end-tests/triggers/package.json
+++ b/scripts/triggers-end-to-end-tests/triggers/package.json
@@ -3,7 +3,7 @@
   "description": "Cloud Functions for Firebase",
   "scripts": {},
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "dependencies": {
     "@firebase/database-compat": "0.1.2",
diff --git a/scripts/triggers-end-to-end-tests/v1/package.json b/scripts/triggers-end-to-end-tests/v1/package.json
index 20e5f269842..ac1bc4c3b67 100644
--- a/scripts/triggers-end-to-end-tests/v1/package.json
+++ b/scripts/triggers-end-to-end-tests/v1/package.json
@@ -3,7 +3,7 @@
   "description": "Cloud Functions for Firebase",
   "scripts": {},
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "dependencies": {
     "@firebase/database-compat": "0.1.2",
diff --git a/scripts/triggers-end-to-end-tests/v2/package.json b/scripts/triggers-end-to-end-tests/v2/package.json
index 4fc272f1852..ec05c49be7d 100644
--- a/scripts/triggers-end-to-end-tests/v2/package.json
+++ b/scripts/triggers-end-to-end-tests/v2/package.json
@@ -3,7 +3,7 @@
   "description": "Cloud Functions for Firebase",
   "scripts": {},
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "dependencies": {
     "firebase-admin": "^11.0.0",
diff --git a/scripts/webframeworks-deploy-tests/functions/package.json b/scripts/webframeworks-deploy-tests/functions/package.json
index 392196b9844..6fca6748f88 100644
--- a/scripts/webframeworks-deploy-tests/functions/package.json
+++ b/scripts/webframeworks-deploy-tests/functions/package.json
@@ -9,7 +9,7 @@
     "logs": "firebase functions:log"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "main": "index.js",
   "dependencies": {
diff --git a/src/test/apiv2.spec.ts b/src/test/apiv2.spec.ts
index 205ec9c212e..de6dbba89ee 100644
--- a/src/test/apiv2.spec.ts
+++ b/src/test/apiv2.spec.ts
@@ -158,7 +158,7 @@ describe("apiv2", () => {
         method: "GET",
         path: "/path/to/foo",
       });
-      await expect(r).to.eventually.be.rejectedWith(FirebaseError, /Unexpected token.+JSON/);
+      await expect(r).to.eventually.be.rejectedWith(FirebaseError, /Unable to parse JSON/);
       expect(nock.isDone()).to.be.true;
     });