diff --git a/external_full.xml b/external_full.xml
index 4b1733e..96838b3 100644
--- a/external_full.xml
+++ b/external_full.xml
@@ -105,15 +105,12 @@
   <project path="src/third_party/toolbox"
            name="third_party/toolbox"
            revision="refs/heads/main" />
-  <project path="src/third_party/kernel/v5.4"
-           name="third_party/kernel"
-           revision="refs/heads/cos-5.4" />
-  <project path="src/third_party/kernel/v5.10"
-           name="third_party/kernel"
-           revision="refs/heads/cos-5.10" />
   <project path="src/third_party/kernel/v5.15"
            name="third_party/kernel"
            revision="refs/heads/cos-5.15" />
+  <project path="src/third_party/kernel/v6.1"
+           name="third_party/kernel"
+           revision="refs/heads/cos-6.1" />
 
   <repo-hooks enabled-list="pre-upload"
            in-project="cos/repohooks" />