diff --git a/frc971/zeroing/BUILD b/frc971/zeroing/BUILD
index 8a8d82c..c63d97d 100644
--- a/frc971/zeroing/BUILD
+++ b/frc971/zeroing/BUILD
@@ -2,6 +2,24 @@
 
 load('/aos/build/queues', 'queue_library')
 
+cc_library(
+  name = 'averager',
+  hdrs = [
+    'averager.h',
+  ],
+)
+
+cc_test(
+  name = 'averager_test',
+  srcs = [
+    'averager_test.cc',
+  ],
+  deps = [
+    ':averager',
+    '//aos/testing:googletest',
+  ],
+)
+
 queue_library(
   name = 'zeroing_queue',
   srcs = [