diff --git a/hive-ruby.gemspec b/hive-ruby.gemspec
index d8a2f1bee0d327c4f35eae5b26a20b83737f8f53..663fabdd5850f247901106df19d494663192fed1 100644
--- a/hive-ruby.gemspec
+++ b/hive-ruby.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |spec|
   
   spec.add_dependency 'json', '~> 2.1', '>= 2.1.0'
   spec.add_dependency 'logging', '~> 2.2', '>= 2.2.0'
-  spec.add_dependency 'hashie', '~> 3.5', '>= 3.5.7'
+  spec.add_dependency 'hashie', '~> 4.1', '>= 3.5.7'
   spec.add_dependency 'bitcoin-ruby', '~> 0.0', '0.0.20'
   spec.add_dependency 'ffi', '~> 1.9', '>= 1.9.23'
   spec.add_dependency 'bindata', '~> 2.4', '>= 2.4.4'
diff --git a/lib/hive/version.rb b/lib/hive/version.rb
index 5ea2b2329ed1fbe5827159562f6f74f115b2ca93..45df482ded5f31492ce57fd57edd130ca2c1db98 100644
--- a/lib/hive/version.rb
+++ b/lib/hive/version.rb
@@ -1,4 +1,4 @@
 module Hive
-  VERSION = '1.0.1'
+  VERSION = '1.0.2'
   AGENT_ID = "hive-ruby/#{VERSION}"
 end
diff --git a/test/hive/account_history_api_test.rb b/test/hive/account_history_api_test.rb
index 65c29e9881151107c1eda57b23b570de9ceb666a..c61dfc307429f9563d6f0e92366e44d398c62041 100644
--- a/test/hive/account_history_api_test.rb
+++ b/test/hive/account_history_api_test.rb
@@ -43,6 +43,40 @@ module Hive
       end
     end
     
+    def test_get_account_history_with_op_mask
+      vcr_cassette('account_history_api_get_account_history_with_op_mask', record: :once) do
+        # We're looking specifically for comment_operation, therefore, for the
+        # first 64 operation types (as defined in protocol/operations.hpp), we set
+        # the corresponding bit in operation_filter_low; for the higher-numbered
+        # operations, set the bit in operation_filter_high (pretending
+        # operation_filter is a 128-bit bitmask composed of
+        # {operation_filter_high, operation_filter_low})
+        # 
+        # Note, we don't really use the operation_filter_high because
+        # comment_operation is the second flag.  In fact, operation_filter_high
+        # could even be nil, if we wanted.
+        # 
+        # https://gitlab.syncad.com/hive/hive/-/blob/master/libraries/protocol/include/hive/protocol/operations.hpp
+        
+        operation_mask = 0x02 # comment_operation
+        operation_filter_low = operation_mask & 0xFFFFFFFF
+        operation_filter_high = (operation_mask & 0xFFFFFFFF00000000) >> 32
+
+        options = {
+          account: 'hiveio',
+          start: 0,
+          limit: 0,
+          include_reversible: true,
+          operation_filter_low: operation_filter_low,
+          operation_filter_high: operation_filter_high
+        }
+        
+        @api.get_account_history(options) do |result|
+          assert_equal Hashie::Array, result.history.class
+        end
+      end
+    end
+    
     def test_get_ops_in_block
       vcr_cassette('account_history_api_get_ops_in_block', record: :once) do
         options = {