diff --git a/src/commands/dev/dev.ts b/src/commands/dev/dev.ts
index 2d79832f92b..7381a4db93c 100644
--- a/src/commands/dev/dev.ts
+++ b/src/commands/dev/dev.ts
@@ -140,11 +140,14 @@ export const dev = async (options: OptionValues, command: BaseCommand) => {
   try {
     settings = await detectServerSettings(devConfig, options, command)
 
-    if (process.env.NETLIFY_INCLUDE_DEV_SERVER_PLUGIN) {
+    const { NETLIFY_INCLUDE_DEV_SERVER_PLUGIN } = process.env
+
+    if (NETLIFY_INCLUDE_DEV_SERVER_PLUGIN) {
+      const plugins = NETLIFY_INCLUDE_DEV_SERVER_PLUGIN.split(',')
       if (options.debug) {
-        log(`${NETLIFYDEVLOG} Including dev server plugin: ${process.env.NETLIFY_INCLUDE_DEV_SERVER_PLUGIN}`)
+        log(`${NETLIFYDEVLOG} Including dev server plugins: ${NETLIFY_INCLUDE_DEV_SERVER_PLUGIN}`)
       }
-      settings.plugins = [...(settings.plugins || []), process.env.NETLIFY_INCLUDE_DEV_SERVER_PLUGIN]
+      settings.plugins = [...(settings.plugins || []), ...plugins]
     }
 
     cachedConfig.config = getConfigWithPlugins(cachedConfig.config, settings)
diff --git a/tests/integration/commands/dev/dev.test.ts b/tests/integration/commands/dev/dev.test.ts
index 08e48ee5d4a..95756d5f190 100644
--- a/tests/integration/commands/dev/dev.test.ts
+++ b/tests/integration/commands/dev/dev.test.ts
@@ -645,6 +645,48 @@ describe.concurrent('command/dev', () => {
           })
         },
       )
+
+      test('ensures installation of dev server plugins', async (t) => {
+        await withSiteBuilder(t, async (builder) => {
+          await builder
+            .withNetlifyToml({
+              config: {
+                plugins: [{ package: '@netlify/plugin-1' }],
+              },
+            })
+            .withPackageJson({
+              packageJson: {
+                dependencies: {
+                  '@netlify/plugin-1': '^6.3.0',
+                  '@netlify/plugin-2': '^6.3.0',
+                },
+              },
+            })
+            .withMockPackage({
+              name: '@netlify/plugin-1',
+              content: '',
+            })
+            .withMockPackage({
+              name: '@netlify/plugin-2',
+              content: '',
+            })
+            .build()
+
+          await withDevServer(
+            {
+              cwd: builder.directory,
+              env: {
+                NETLIFY_INCLUDE_DEV_SERVER_PLUGIN: '@netlify/plugin-1,@netlify/plugin-2',
+              },
+            },
+            async (server) => {
+              const output = server.outputBuffer.map((buff) => buff.toString()).join('\n')
+              t.expect(output).toContain('Server now ready')
+              t.expect(server.errorBuffer).toHaveLength(0)
+            },
+          )
+        })
+      })
     })
   })
 })
diff --git a/tests/integration/utils/site-builder.ts b/tests/integration/utils/site-builder.ts
index b89b1597ac2..d8605776cd5 100644
--- a/tests/integration/utils/site-builder.ts
+++ b/tests/integration/utils/site-builder.ts
@@ -187,6 +187,18 @@ export class SiteBuilder {
     return this
   }
 
+  withMockPackage({ content, name }: { name: string; content: string }) {
+    const dir = path.join(this.directory, 'node_modules', name)
+    this.tasks.push(async () => {
+      await ensureDir(dir)
+      await writeFile(path.join(dir, 'index.js'), content)
+      await writeFile(path.join(dir, 'package.json'), '{}')
+      await writeFile(path.join(dir, 'manifest.yml'), `name: '${name}'`)
+    })
+
+    return this
+  }
+
   withCopiedFile({ path: filePath, src }: { path: string; src: string }) {
     const dest = path.join(this.directory, filePath)
     this.tasks.push(async () => {