diff --git a/README.md b/README.md
index 525f591..6b701e4 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,11 @@ To install the source directory (tarball release or git clone):
 $ opam install .
 ```
 
+To use the current master branch:
+```
+$ opam pin -y sdl2 https://github.com/fccm/OCamlSDL2.git#master
+```
+
 
 ## API Documentation
 
diff --git a/opam b/opam
index ede104f..11b4d1e 100644
--- a/opam
+++ b/opam
@@ -36,6 +36,8 @@ build: [
   [make "-C" "src" "dep"]
   [make "-C" "src" "opt"]
   [make "-C" "src" "byte"]
+  [make "-C" "src" "baopt"]
+  [make "-C" "src" "ba"]
 ]
 install: [
   [make "-C" "src" "findinstall"]