diff --git a/lib/html_pipeline/filter.rb b/lib/html_pipeline/filter.rb
index 5695bb34..fbdbcfdc 100644
--- a/lib/html_pipeline/filter.rb
+++ b/lib/html_pipeline/filter.rb
@@ -16,8 +16,6 @@ class HTMLPipeline
   # Each filter may define additional options and output values. See the class
   # docs for more info.
   class Filter
-    attr_accessor :context
-
     class InvalidDocumentException < StandardError; end
 
     def initialize(context: {}, result: {})
@@ -29,7 +27,7 @@ def initialize(context: {}, result: {})
     # Public: Returns a simple Hash used to pass extra information into filters
     # and also to allow filters to make extracted information available to the
     # caller.
-    attr_reader :context
+    attr_accessor :context
 
     # Public: Returns a Hash used to allow filters to pass back information
     # to callers of the various Pipelines.  This can be used for
diff --git a/lib/html_pipeline/node_filter.rb b/lib/html_pipeline/node_filter.rb
index fa6948e9..d318c4c0 100644
--- a/lib/html_pipeline/node_filter.rb
+++ b/lib/html_pipeline/node_filter.rb
@@ -4,6 +4,8 @@
 
 class HTMLPipeline
   class NodeFilter < Filter
+    attr_accessor :context
+
     def initialize(context: {}, result: {})
       super(context: context, result: {})
       send(:after_initialize) if respond_to?(:after_initialize)