From d888b08c9ff956b797218cc37803599e5b0d9ec1 Mon Sep 17 00:00:00 2001
From: Gyeongjae Choi <gyeongjae@cloudflare.com>
Date: Tue, 27 Oct 2026 07:32:35 +0000
Subject: [PATCH] Add python_zstd_snapshot compat flag

---
 src/workerd/io/compatibility-date.capnp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/workerd/io/compatibility-date.capnp b/src/workerd/io/compatibility-date.capnp
index b1cb45a5334..e82f3f0c9f0 100644
--- a/src/workerd/io/compatibility-date.capnp
+++ b/src/workerd/io/compatibility-date.capnp
@@ -1769,4 +1769,9 @@ struct CompatibilityFlags @0x8f8c1b68151b6cef {
   # Exposes the Temporal date/time API: the `Temporal` global and
   # `Date.prototype.toTemporalInstant`. Without the flag both are deleted from the
   # context before user code runs.
+
+  pythonZstdSnapshot @201 :Bool
+      $compatEnableFlag("python_zstd_snapshot")
+      $experimental;
+  # Compresses the memory snapshot of a Python Worker with zstd.
 }