diff --git a/apps/server/src/git/Layers/GitHubCli.ts b/apps/server/src/git/Layers/GitHubCli.ts
index 280679e337..9ac3c99ed1 100644
--- a/apps/server/src/git/Layers/GitHubCli.ts
+++ b/apps/server/src/git/Layers/GitHubCli.ts
@@ -168,6 +168,7 @@ const makeGitHubCli = Effect.sync(() => {
         runProcess("gh", input.args, {
           cwd: input.cwd,
           timeoutMs: input.timeoutMs ?? DEFAULT_TIMEOUT_MS,
+          shell: false,
         }),
       catch: (error) => normalizeGitHubCliError("execute", error),
     });
diff --git a/apps/server/src/processRunner.ts b/apps/server/src/processRunner.ts
index 5402612887..cb5881cef0 100644
--- a/apps/server/src/processRunner.ts
+++ b/apps/server/src/processRunner.ts
@@ -8,6 +8,7 @@ export interface ProcessRunOptions {
   allowNonZeroExit?: boolean | undefined;
   maxBufferBytes?: number | undefined;
   outputMode?: "error" | "truncate" | undefined;
+  shell?: boolean | undefined;
 }
 
 export interface ProcessRunResult {
@@ -139,7 +140,7 @@ export async function runProcess(
       cwd: options.cwd,
       env: options.env,
       stdio: "pipe",
-      shell: process.platform === "win32",
+      shell: options.shell ?? process.platform === "win32",
     });
 
     let stdout = "";