diff --git a/chromium_src/net/tools/transport_security_state_generator/input_file_parsers.cc b/chromium_src/net/tools/transport_security_state_generator/input_file_parsers.cc
index 84db1e3ed3b5..6eb5efc9eb64 100644
--- a/chromium_src/net/tools/transport_security_state_generator/input_file_parsers.cc
+++ b/chromium_src/net/tools/transport_security_state_generator/input_file_parsers.cc
@@ -561,9 +561,9 @@ bool ParseCertificatesFile(std::string_view certs_input,
                            Pinsets* pinsets,
                            base::Time* timestamp) {
   constexpr std::string_view brave_certs = R"brave_certs(
-# Last updated: Tue Dec 10 22:53:03 UTC 2024
+# Last updated: Wed Dec 18 22:36:35 UTC 2024
 PinsListTimestamp
-1733871183
+1734561395
 
 # =====BEGIN BRAVE ROOTS ASC=====
 #From https://www.amazontrust.com/repository/
diff --git a/package.json b/package.json
index 106578da57b2..91206e5cbec1 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "projects": {
       "chrome": {
         "dir": "src",
-        "tag": "131.0.6778.139",
+        "tag": "131.0.6778.204",
         "repository": {
           "url": "https://github.com/brave/chromium"
         }