diff --git a/express/frontend/src/lib/gitHub.ts b/express/frontend/src/lib/gitHub.ts
index 991bacc..87323fa 100644
--- a/express/frontend/src/lib/gitHub.ts
+++ b/express/frontend/src/lib/gitHub.ts
@@ -113,6 +113,17 @@ export class GitHubRepoComm {
 		return result.data;
 	}
 
+	public readonly getBranches = AsyncCache.of(async () => {
+		const result = await this.request(
+			"GET /repos/{owner}/{repo}/branches",
+			{
+				...this.baseOptions,
+				per_page: 100,
+			},
+		);
+		return result.data;
+	});
+
 	public readonly getTags = AsyncCache.of(async () => {
 		const result = await this.request("GET /repos/{owner}/{repo}/tags", {
 			...this.baseOptions,
diff --git a/express/frontend/src/lib/ioBroker.ts b/express/frontend/src/lib/ioBroker.ts
index ed63024..96f91f2 100644
--- a/express/frontend/src/lib/ioBroker.ts
+++ b/express/frontend/src/lib/ioBroker.ts
@@ -247,9 +247,12 @@ export interface CheckResults {
 	errors: CheckResult[];
 }
 
-export async function checkAdapter(repoName: string) {
-	const { data } = await axios.get<CheckResults>(
-		`${getApiUrl("repochecker/")}?url=${uc(`https://github.com/${repoName}`)}`,
-	);
+export async function checkAdapter(repoName: string, branchName?: string) {
+	const url = new URL(getApiUrl("repochecker/"), window.location.origin);
+	url.searchParams.set("url", `https://github.com/${repoName}`);
+	if (branchName) {
+		url.searchParams.set("branch", branchName);
+	}
+	const { data } = await axios.get<CheckResults>(url.toString());
 	return data;
 }
diff --git a/express/frontend/src/tools/AdapterCheck.tsx b/express/frontend/src/tools/AdapterCheck.tsx
index 1f5fd75..d37355f 100644
--- a/express/frontend/src/tools/AdapterCheck.tsx
+++ b/express/frontend/src/tools/AdapterCheck.tsx
@@ -24,6 +24,7 @@ import { useEffect, useState } from "react";
 import Chart from "react-google-charts";
 import { useSearchParams } from "react-router-dom";
 import { useUserToken } from "../contexts/UserContext";
+import { GitHubComm } from "../lib/gitHub";
 import { checkAdapter, CheckResult, getMyAdapterRepos } from "../lib/ioBroker";
 
 export const iconStyles = {
@@ -95,6 +96,8 @@ export function AdapterCheck() {
 	const [searchParams] = useSearchParams();
 	const [repoNames, setRepoNames] = useState<string[]>([]);
 	const [repoName, setRepoName] = useState("");
+	const [branchNames, setBranchNames] = useState<string[]>([]);
+	const [branchName, setBranchName] = useState("");
 	const [busy, setBusy] = useState(false);
 	const [messages, setMessages] = useState<Message[]>([]);
 	useEffect(() => {
@@ -112,11 +115,38 @@ export function AdapterCheck() {
 		}
 	}, [repo]);
 
+	useEffect(() => {
+		setBranchName("");
+		setBranchNames([]);
+		let cancelled = false;
+		const loadBranches = async () => {
+			const [owner, repo] = repoName.split("/");
+			if (!owner || !repo) {
+				return;
+			}
+
+			const gitHub = GitHubComm.forToken(token);
+			const branches = await gitHub.getRepo(owner, repo).getBranches();
+			if (!cancelled) {
+				setBranchNames(
+					branches
+						.map((b) => b.name)
+						.filter((b) => !b.startsWith("dependabot/")),
+				);
+			}
+		};
+		loadBranches().catch(console.error);
+
+		return () => {
+			cancelled = true;
+		};
+	}, [repoName, token]);
+
 	const handleStartClick = async () => {
 		setMessages([]);
 		setBusy(true);
 		try {
-			const results = await checkAdapter(repoName);
+			const results = await checkAdapter(repoName, branchName);
 			const messages = results.errors.map((c) => new Message("error", c));
 			messages.push(
 				...results.warnings.map((c) => new Message("warning", c)),
@@ -176,6 +206,24 @@ export function AdapterCheck() {
 						)}
 					/>
 				</Grid2>
+				<Grid2>
+					<Autocomplete
+						freeSolo
+						disabled={busy || !repoName}
+						options={branchNames}
+						getOptionLabel={(option) => option}
+						sx={{ width: 170 }}
+						inputValue={branchName}
+						onInputChange={(_e, value) => setBranchName(value)}
+						renderInput={(params) => (
+							<TextField
+								{...params}
+								label="Branch (optional)"
+								variant="outlined"
+							/>
+						)}
+					/>
+				</Grid2>
 				<Grid2>
 					<Button
 						variant="contained"