diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2cead697f5c0..8ae8802089e2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -812,6 +812,28 @@ jobs:
         working-directory: dev-packages/node-integration-tests
         run: yarn test
 
+  job_node_v18_compat:
+    name: Node v18.0.0 Compatibility Check
+    needs: [job_get_metadata, job_build]
+    if: needs.job_build.outputs.changed_node == 'true' || github.event_name != 'pull_request'
+    runs-on: ubuntu-24.04
+    timeout-minutes: 5
+    steps:
+      - name: Check out current commit (${{ needs.job_get_metadata.outputs.commit_label }})
+        uses: actions/checkout@v6
+        with:
+          ref: ${{ env.HEAD_COMMIT }}
+      - name: Set up Node
+        uses: actions/setup-node@v6
+        with:
+          node-version: '18.0.0'
+      - name: Restore caches
+        uses: ./.github/actions/restore-cache
+        with:
+          dependency_cache_key: ${{ needs.job_build.outputs.dependency_cache_key }}
+      - name: Check Node v18.0.0 compatibility
+        run: node scripts/node-v18-compat-check.js
+
   job_node_core_integration_tests:
     name:
       Node (${{ matrix.node }})${{ (matrix.typescript && format(' (TS {0})', matrix.typescript)) || '' }} Node-Core
@@ -1198,6 +1220,7 @@ jobs:
         job_deno_unit_tests,
         job_node_unit_tests,
         job_node_integration_tests,
+        job_node_v18_compat,
         job_node_core_integration_tests,
         job_cloudflare_integration_tests,
         job_bun_integration_tests,
diff --git a/packages/server-utils/src/integrations/tracing-channel/mysql.ts b/packages/server-utils/src/integrations/tracing-channel/mysql.ts
index 5384b84f95f5..fcbda0fde6b3 100644
--- a/packages/server-utils/src/integrations/tracing-channel/mysql.ts
+++ b/packages/server-utils/src/integrations/tracing-channel/mysql.ts
@@ -1,4 +1,4 @@
-import { tracingChannel } from 'node:diagnostics_channel';
+import * as diagnosticsChannel from 'node:diagnostics_channel';
 import type { IntegrationFn, Span } from '@sentry/core';
 import {
   debug,
@@ -73,7 +73,7 @@ const _mysqlChannelIntegration = (() => {
     name: INTEGRATION_NAME,
     setupOnce() {
       DEBUG_BUILD && debug.log(`[orchestrion:mysql] subscribing to channel "${CHANNELS.MYSQL_QUERY}"`);
-      const queryCh = tracingChannel(CHANNELS.MYSQL_QUERY);
+      const queryCh = diagnosticsChannel.tracingChannel(CHANNELS.MYSQL_QUERY);
 
       // Each `context` object is shared across start/end/asyncStart/asyncEnd/error
       // for one call (orchestrion creates one per invocation). We key the span
diff --git a/scripts/node-v18-compat-check.js b/scripts/node-v18-compat-check.js
new file mode 100644
index 000000000000..6dc999d5034d
--- /dev/null
+++ b/scripts/node-v18-compat-check.js
@@ -0,0 +1,7 @@
+'use strict';
+
+// Verify the Node SDK can be loaded without errors on Node v18.0.0 (the minimum supported version).
+// This catches accidental use of Node APIs that don't exist in v18.0.0.
+require('@sentry/node');
+
+console.log('Node v18.0.0 compatibility check passed');