diff --git a/extensions/vscode-api-tests/package.json b/extensions/vscode-api-tests/package.json
index 63a3e7bf194da..a802f11c3150c 100644
--- a/extensions/vscode-api-tests/package.json
+++ b/extensions/vscode-api-tests/package.json
@@ -46,7 +46,9 @@
     "workspaceTrust",
     "telemetry",
     "windowActivity",
-    "interactiveUserActions"
+    "interactiveUserActions",
+    "envCollectionWorkspace",
+    "envCollectionOptions"
   ],
   "private": true,
   "activationEvents": [],
diff --git a/src/vs/workbench/api/common/extHostTerminalService.ts b/src/vs/workbench/api/common/extHostTerminalService.ts
index d20f3a89f6726..40b5a41ee4b86 100644
--- a/src/vs/workbench/api/common/extHostTerminalService.ts
+++ b/src/vs/workbench/api/common/extHostTerminalService.ts
@@ -25,7 +25,7 @@ import { withNullAsUndefined } from 'vs/base/common/types';
 import { Promises } from 'vs/base/common/async';
 import { EditorGroupColumn } from 'vs/workbench/services/editor/common/editorGroupColumn';
 import { ViewColumn } from 'vs/workbench/api/common/extHostTypeConverters';
-import { isProposedApiEnabled } from 'vs/workbench/services/extensions/common/extensions';
+import { checkProposedApiEnabled } from 'vs/workbench/services/extensions/common/extensions';
 
 export interface IExtHostTerminalService extends ExtHostTerminalServiceShape, IDisposable {
 
@@ -898,6 +898,10 @@ class UnifiedEnvironmentVariableCollection {
 	}
 
 	getScopedEnvironmentVariableCollection(scope: vscode.EnvironmentVariableScope | undefined): IEnvironmentVariableCollection {
+		if (this._extension && scope) {
+			// TODO: This should be removed when the env var extension API(s) are stabilized
+			checkProposedApiEnabled(this._extension, 'envCollectionWorkspace');
+		}
 		const scopedCollectionKey = this.getScopeKey(scope);
 		let scopedCollection = this.scopedCollections.get(scopedCollectionKey);
 		if (!scopedCollection) {
@@ -910,21 +914,21 @@ class UnifiedEnvironmentVariableCollection {
 
 	replace(variable: string, value: string, options: vscode.EnvironmentVariableMutatorOptions | undefined, scope: vscode.EnvironmentVariableScope | undefined): void {
 		if (this._extension && options) {
-			isProposedApiEnabled(this._extension, 'envCollectionOptions');
+			checkProposedApiEnabled(this._extension, 'envCollectionOptions');
 		}
 		this._setIfDiffers(variable, { value, type: EnvironmentVariableMutatorType.Replace, options: options ?? {}, scope });
 	}
 
 	append(variable: string, value: string, options: vscode.EnvironmentVariableMutatorOptions | undefined, scope: vscode.EnvironmentVariableScope | undefined): void {
 		if (this._extension && options) {
-			isProposedApiEnabled(this._extension, 'envCollectionOptions');
+			checkProposedApiEnabled(this._extension, 'envCollectionOptions');
 		}
 		this._setIfDiffers(variable, { value, type: EnvironmentVariableMutatorType.Append, options: options ?? {}, scope });
 	}
 
 	prepend(variable: string, value: string, options: vscode.EnvironmentVariableMutatorOptions | undefined, scope: vscode.EnvironmentVariableScope | undefined): void {
 		if (this._extension && options) {
-			isProposedApiEnabled(this._extension, 'envCollectionOptions');
+			checkProposedApiEnabled(this._extension, 'envCollectionOptions');
 		}
 		this._setIfDiffers(variable, { value, type: EnvironmentVariableMutatorType.Prepend, options: options ?? {}, scope });
 	}