diff --git a/src/monitor_utils/constants.py b/src/monitor_utils/constants.py
index c2bb079..3b0f7b0 100644
--- a/src/monitor_utils/constants.py
+++ b/src/monitor_utils/constants.py
@@ -43,7 +43,19 @@ MAX_CURL_HANDLES = 64
 # no timeout of its own, so a wedged transfer would otherwise park whatever is
 # closing the session, including an `async with` exit.
 SESSION_CLOSE_TIMEOUT_SECONDS = 10
-CLIENT_IDENTIFIERS = ["chrome", "chrome_android", "safari", "safari_ios"]
+# Explicit curl_cffi profiles rather than the "chrome" / "chrome_android"
+# aliases, which float to the newest build (chrome146 / chrome131_android in
+# curl_cffi 0.15). Chrome 116, 123 and everything from 133a up were refused by
+# B&H's Cloudflare on every try (2026-09-26); the ones listed passed.
+CLIENT_IDENTIFIERS = [
+    "chrome119",
+    "chrome120",
+    "chrome124",
+    "chrome131",
+    "chrome131_android",
+    "safari",
+    "safari_ios",
+]
 CLIENT_TIMEOUT = aiohttp.ClientTimeout(
     total=TIMEOUT_SECONDS, sock_connect=30, sock_read=30
 )