diff --git a/src/ClaudeDo.Data/Git/GitService.cs b/src/ClaudeDo.Data/Git/GitService.cs
index c524473..b3bd3ea 100644
--- a/src/ClaudeDo.Data/Git/GitService.cs
+++ b/src/ClaudeDo.Data/Git/GitService.cs
@@ -236,6 +236,9 @@ public sealed class GitService
             RedirectStandardInput = stdinData is not null,
             UseShellExecute = false,
             CreateNoWindow = true,
+            StandardOutputEncoding = Encoding.UTF8,
+            StandardErrorEncoding = Encoding.UTF8,
+            StandardInputEncoding = stdinData is not null ? Encoding.UTF8 : null,
         };
         psi.ArgumentList.Add("-C");
         psi.ArgumentList.Add(workDir);