diff --git a/packages/tailwindcss-language-service/src/completionProvider.ts b/packages/tailwindcss-language-service/src/completionProvider.ts
index 0c381a4..cef47b7 100644
--- a/packages/tailwindcss-language-service/src/completionProvider.ts
+++ b/packages/tailwindcss-language-service/src/completionProvider.ts
@@ -199,7 +199,7 @@ function provideAtApplyCompletions(
     },
     (item) => {
       if (item.kind === 9) {
-        return flagEnabled(state, 'applyComplexClasses')
+        return semver.gte(state.version, '2.0.0-alpha.1') || flagEnabled(state, 'applyComplexClasses')
       }
       let validated = validateApply(state, item.data)
       return validated !== null && validated.isApplyable === true
diff --git a/packages/tailwindcss-language-service/src/diagnostics/getInvalidApplyDiagnostics.ts b/packages/tailwindcss-language-service/src/diagnostics/getInvalidApplyDiagnostics.ts
index 11d835d..3e6d03e 100644
--- a/packages/tailwindcss-language-service/src/diagnostics/getInvalidApplyDiagnostics.ts
+++ b/packages/tailwindcss-language-service/src/diagnostics/getInvalidApplyDiagnostics.ts
@@ -3,7 +3,6 @@ import { InvalidApplyDiagnostic, DiagnosticKind } from './types'
 import { Settings, State } from '../util/state'
 import type { TextDocument, DiagnosticSeverity } from 'vscode-languageserver'
 import { validateApply } from '../util/validateApply'
-import { flagEnabled } from '../util/flagEnabled'
 
 export function getInvalidApplyDiagnostics(
   state: State,
@@ -12,7 +11,6 @@ export function getInvalidApplyDiagnostics(
 ): InvalidApplyDiagnostic[] {
   let severity = settings.lint.invalidApply
   if (severity === 'ignore') return []
-  if (flagEnabled(state, 'applyComplexClasses')) return []
 
   const classNames = findClassNamesInRange(document, undefined, 'css')
 
diff --git a/packages/tailwindcss-language-service/src/util/validateApply.ts b/packages/tailwindcss-language-service/src/util/validateApply.ts
index 5a17956..e661c4c 100644
--- a/packages/tailwindcss-language-service/src/util/validateApply.ts
+++ b/packages/tailwindcss-language-service/src/util/validateApply.ts
@@ -1,6 +1,7 @@
 import { State } from './state'
 import { getClassNameMeta } from './getClassNameMeta'
 import { flagEnabled } from './flagEnabled'
+import semver from 'semver'
 
 export function validateApply(
   state: State,
@@ -9,7 +10,10 @@ export function validateApply(
   const meta = getClassNameMeta(state, classNameOrParts)
   if (!meta) return null
 
-  if (flagEnabled(state, 'applyComplexClasses')) {
+  if (
+    semver.gte(state.version, '2.0.0-alpha.1') ||
+    flagEnabled(state, 'applyComplexClasses')
+  ) {
     return { isApplyable: true }
   }