diff --git a/api/proto/buf-legacy.yaml b/api/proto/buf-legacy.yaml
index 7a2db93335bea..f458acb516663 100644
--- a/api/proto/buf-legacy.yaml
+++ b/api/proto/buf-legacy.yaml
@@ -28,4 +28,4 @@ lint:
     - RPC_RESPONSE_STANDARD_NAME
 breaking:
   use:
-    - FILE
+    - "buf-legacy.yaml should not be used for buf breaking"
diff --git a/api/proto/buf.yaml b/api/proto/buf.yaml
index e4547910ce33a..dbc4011a20b84 100644
--- a/api/proto/buf.yaml
+++ b/api/proto/buf.yaml
@@ -59,3 +59,7 @@ lint:
 breaking:
   use:
     - WIRE_JSON
+    - ENUM_VALUE_NO_DELETE
+  ignore_only:
+    RESERVED_ENUM_NO_DELETE:
+      - teleport/legacy/types/types.proto
diff --git a/proto/buf.yaml b/proto/buf.yaml
index 444eba49d6f58..c89d2c1a21a6e 100644
--- a/proto/buf.yaml
+++ b/proto/buf.yaml
@@ -1,7 +1,7 @@
 version: v1
 deps:
-    # gogo/protobuf v1.3.2, keep in sync with build.assets/Makefile.
-    - buf.build/gogo/protobuf:b03c65ea87cdc3521ede29f62fe3ce239267c1bc
+  # gogo/protobuf v1.3.2, keep in sync with build.assets/Makefile.
+  - buf.build/gogo/protobuf:b03c65ea87cdc3521ede29f62fe3ce239267c1bc
 lint:
   use:
     - DEFAULT
@@ -49,3 +49,7 @@ lint:
 breaking:
   use:
     - WIRE_JSON
+    - ENUM_VALUE_NO_DELETE
+  ignore_only:
+    RESERVED_ENUM_NO_DELETE:
+      - teleport/legacy/types/types.proto