diff --git a/VERSION b/VERSION
index cb0c939..be14282 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.5.2
+0.5.3
diff --git a/larry.sh b/larry.sh
index c5b7ee9..7185e68 100755
--- a/larry.sh
+++ b/larry.sh
@@ -36,7 +36,7 @@ set -o pipefail
 # ─────────────────────────────────────────────────────────────────────────────
 # Config
 # ─────────────────────────────────────────────────────────────────────────────
-LARRY_VERSION="0.5.2"
+LARRY_VERSION="0.5.3"
 LARRY_HOME="${LARRY_HOME:-$HOME/.larry}"
 LARRY_BASE_URL="${LARRY_BASE_URL:-https://raw.githubusercontent.com/bojj27/cloverleaf-larry/main}"
 LARRY_UPDATE_URL="${LARRY_UPDATE_URL:-${LARRY_BASE_URL}/larry.sh}"
diff --git a/lib/oauth.sh b/lib/oauth.sh
index bee39db..53683fa 100755
--- a/lib/oauth.sh
+++ b/lib/oauth.sh
@@ -122,7 +122,9 @@ EOF
   local resp
   resp=$(curl -sS -X POST "$TOKEN_URL" \
     -H "Content-Type: application/json" \
+    -H "Accept: application/json" \
     -H "anthropic-beta: oauth-2025-04-20" \
+    -H "User-Agent: claude-cli/2.1.85 (larry-anywhere)" \
     -d "$(jq -n \
         --arg cid       "$CLIENT_ID" \
         --arg code      "$code" \
@@ -168,7 +170,9 @@ cmd_refresh() {
   local resp
   resp=$(curl -sS -X POST "$TOKEN_URL" \
     -H "Content-Type: application/json" \
+    -H "Accept: application/json" \
     -H "anthropic-beta: oauth-2025-04-20" \
+    -H "User-Agent: claude-cli/2.1.85 (larry-anywhere)" \
     -d "$(jq -n --arg cid "$CLIENT_ID" --arg rt "$refresh_token" \
         '{client_id:$cid, grant_type:"refresh_token", refresh_token:$rt}')")