diff --git a/third_party/linux-firmware/external.bzl b/third_party/linux-firmware/external.bzl
index c014469..7ab8434 100644
--- a/third_party/linux-firmware/external.bzl
+++ b/third_party/linux-firmware/external.bzl
@@ -4,6 +4,9 @@
     sums = {
         "20211216": "c0f735dd232c22d41ce4d23a050a8d6efe3b6b8cbf9d0a636af5f9df66a619a3",
         "20230310": "14c472af10f9b566c4f575aeb30d8a274d54b1660007e7426b7e4ea21dff81aa",
+        # We need the Zenbleed fix for which there is no release yet, so pin
+        # 2023-07-25 master.
+        "b6ea35ff6b9869470a0c68813f1668acb3d356a8": "67e58b74fb0eebb17fdf95c58a24c6244f93bb0ae8e880f1814ad80463f3a935",
     }
     all_content = """
 filegroup(name = "all_files", srcs = glob(["**"]), visibility = ["//visibility:public"])