diff --git a/.circleci/config.yml b/.circleci/config.yml
index b06f8c8..2a71b63 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -34,9 +34,9 @@ workflows:
   version: 2
   ci:
     jobs:
-      # - test:
-      #     name: "ruby3-0"
-      #     ruby_version: "3.0.0"
+      - test:
+          name: "ruby3-0"
+          ruby_version: "3.0.0"
       - test:
           name: "ruby2-7"
           ruby_version: "2.7.0"
diff --git a/lib/ldpath/program.rb b/lib/ldpath/program.rb
index 99a3870..27f2028 100644
--- a/lib/ldpath/program.rb
+++ b/lib/ldpath/program.rb
@@ -6,7 +6,7 @@ class << self
       def parse(program, transform_context = {})
         ast = transform.apply load(program), transform_context
 
-        Ldpath::Program.new ast.compact, transform_context
+        Ldpath::Program.new ast.compact, **transform_context
       end
 
       def load(program)
diff --git a/lib/ldpath/transform.rb b/lib/ldpath/transform.rb
index 216fc59..6be8bd5 100644
--- a/lib/ldpath/transform.rb
+++ b/lib/ldpath/transform.rb
@@ -71,7 +71,7 @@ def apply(obj, context = nil)
     # Mappings
 
     rule(mapping: subtree(:mapping)) do
-      FieldMapping.new mapping
+      FieldMapping.new **mapping
     end
 
     ## Selectors