diff --git a/pillarsdk/api.py b/pillarsdk/api.py
index 061ed1a..abf5b39 100644
--- a/pillarsdk/api.py
+++ b/pillarsdk/api.py
@@ -161,6 +161,8 @@ class Api(object):
             raise exceptions.ResourceConflict(response, content)
         elif status == 410:
             raise exceptions.ResourceGone(response, content)
+        elif status == 412:
+            raise exceptions.PreconditionFailed(response, content)
         elif status == 422:
             raise exceptions.ResourceInvalid(response, content)
         elif 401 <= status <= 499:
diff --git a/pillarsdk/exceptions.py b/pillarsdk/exceptions.py
index db58658..468aff3 100644
--- a/pillarsdk/exceptions.py
+++ b/pillarsdk/exceptions.py
@@ -78,6 +78,11 @@ class ResourceGone(ClientError):
     pass
 
 
+class PreconditionFailed(ClientError):
+    """412 Precondition Failed"""
+    pass
+
+
 class ResourceInvalid(ClientError):
     """422 Invalid
     """