diff --git a/lib/build.py b/lib/build.py
index 4e2e1a1a..b88ccda4 100644
--- a/lib/build.py
+++ b/lib/build.py
@@ -28,10 +28,7 @@
 
 proto(
     name="config_proto",
-    srcs=[
-        "./config.proto",
-        "./imagewriter/imagewriter.proto",
-    ],
+    srcs=["./config.proto"],
     deps=[
         ".+common_proto",
         ".+layout_proto",
@@ -44,6 +41,7 @@
         "lib/encoders+proto",
         "lib/decoders+proto",
         "lib/imagereader+proto",
+        "lib/imagewriter+proto",
     ],
 )
 
diff --git a/lib/imagewriter/build.py b/lib/imagewriter/build.py
new file mode 100644
index 00000000..67876025
--- /dev/null
+++ b/lib/imagewriter/build.py
@@ -0,0 +1,12 @@
+from build.protobuf import proto, protocc
+
+proto(
+    name="proto",
+    srcs=["./imagewriter.proto"],
+    deps=["lib+common_proto", "lib/imagereader+proto"],
+)
+protocc(
+    name="proto_lib",
+    srcs=[".+proto"],
+    deps=["lib+common_proto_lib", "lib/imagereader+proto_lib"],
+)