diff --git a/bpforms/_version.py b/bpforms/_version.py
index ad3cf1d..b459ff2 100644
--- a/bpforms/_version.py
+++ b/bpforms/_version.py
@@ -1 +1 @@
-__version__ = '0.0.11'
+__version__ = '0.0.12'
diff --git a/requirements.txt b/requirements.txt
index e9776f2..7add662 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,4 @@ requests_cache
 ruamel.yaml >= 0.15
 setuptools
 sqlalchemy
-wc_utils >= 0.0.11
+wc_utils[chem, protonation] >= 0.0.13