diff --git a/hpxml-measures/HPXMLtoOpenStudio/measure.xml b/hpxml-measures/HPXMLtoOpenStudio/measure.xml
index d2e153625..e7aac3bcd 100644
--- a/hpxml-measures/HPXMLtoOpenStudio/measure.xml
+++ b/hpxml-measures/HPXMLtoOpenStudio/measure.xml
@@ -3,8 +3,8 @@
   <schema_version>3.1</schema_version>
   <name>hpxm_lto_openstudio</name>
   <uid>b1543b30-9465-45ff-ba04-1d1f85e763bc</uid>
-  <version_id>99f39280-a6e5-47aa-a0c8-9aefa26ea26c</version_id>
-  <version_modified>2024-05-29T02:38:03Z</version_modified>
+  <version_id>19f754cf-2165-45e2-9387-46f301d3d453</version_id>
+  <version_modified>2024-05-29T18:54:28Z</version_modified>
   <xml_checksum>D8922A73</xml_checksum>
   <class_name>HPXMLtoOpenStudio</class_name>
   <display_name>HPXML to OpenStudio Translator</display_name>
@@ -387,7 +387,7 @@
       <filename>hvac_sizing.rb</filename>
       <filetype>rb</filetype>
       <usage_type>resource</usage_type>
-      <checksum>E9C68804</checksum>
+      <checksum>258360CD</checksum>
     </file>
     <file>
       <filename>lighting.rb</filename>
@@ -429,7 +429,7 @@
       <filename>output.rb</filename>
       <filetype>rb</filetype>
       <usage_type>resource</usage_type>
-      <checksum>4E4BE5F9</checksum>
+      <checksum>CF115DD1</checksum>
     </file>
     <file>
       <filename>psychrometrics.rb</filename>
diff --git a/hpxml-measures/HPXMLtoOpenStudio/resources/hvac_sizing.rb b/hpxml-measures/HPXMLtoOpenStudio/resources/hvac_sizing.rb
index 159487455..fcc2c3acd 100644
--- a/hpxml-measures/HPXMLtoOpenStudio/resources/hvac_sizing.rb
+++ b/hpxml-measures/HPXMLtoOpenStudio/resources/hvac_sizing.rb
@@ -4110,7 +4110,7 @@ def self.floors(obj)
         File.open(output_file_path, 'w') { |json| json.write(JSON.pretty_generate(h)) }
       elsif output_format == 'msgpack'
         require 'msgpack'
-        File.open(output_file_path, 'w') { |json| h.to_msgpack(json) }
+        File.open(output_file_path, 'wb') { |json| h.to_msgpack(json) }
       end
     end
   end
diff --git a/hpxml-measures/HPXMLtoOpenStudio/resources/output.rb b/hpxml-measures/HPXMLtoOpenStudio/resources/output.rb
index 9010ae6ae..cde28e52d 100644
--- a/hpxml-measures/HPXMLtoOpenStudio/resources/output.rb
+++ b/hpxml-measures/HPXMLtoOpenStudio/resources/output.rb
@@ -342,7 +342,7 @@ def self.write_results_out_to_file(results_out, output_format, output_file_path,
         require 'json'
         File.open(output_file_path, mode) { |json| json.write(JSON.pretty_generate(h)) }
       elsif output_format == 'msgpack'
-        File.open(output_file_path, mode) { |json| h.to_msgpack(json) }
+        File.open(output_file_path, "#{mode}b") { |json| h.to_msgpack(json) }
       end
     end
   end
diff --git a/hpxml-measures/ReportSimulationOutput/measure.rb b/hpxml-measures/ReportSimulationOutput/measure.rb
index 608e8508b..e997eb657 100644
--- a/hpxml-measures/ReportSimulationOutput/measure.rb
+++ b/hpxml-measures/ReportSimulationOutput/measure.rb
@@ -1832,7 +1832,7 @@ def report_timeseries_output_results(runner, outputs, timeseries_output_path, ar
         require 'json'
         File.open(timeseries_output_path, 'w') { |json| json.write(JSON.pretty_generate(h)) }
       elsif args[:output_format] == 'msgpack'
-        File.open(timeseries_output_path, 'w') { |json| h.to_msgpack(json) }
+        File.open(timeseries_output_path, 'wb') { |json| h.to_msgpack(json) }
       end
     end
     runner.registerInfo("Wrote timeseries output results to #{timeseries_output_path}.")
diff --git a/hpxml-measures/ReportSimulationOutput/measure.xml b/hpxml-measures/ReportSimulationOutput/measure.xml
index 1153c1c3a..6e687184b 100644
--- a/hpxml-measures/ReportSimulationOutput/measure.xml
+++ b/hpxml-measures/ReportSimulationOutput/measure.xml
@@ -3,8 +3,8 @@
   <schema_version>3.1</schema_version>
   <name>report_simulation_output</name>
   <uid>df9d170c-c21a-4130-866d-0d46b06073fd</uid>
-  <version_id>ec111528-5b18-43ad-ae95-0a41f5aaec05</version_id>
-  <version_modified>2024-05-24T00:08:38Z</version_modified>
+  <version_id>e9577eb7-04dc-4d34-b4b2-81b86c0bdd15</version_id>
+  <version_modified>2024-05-29T18:54:30Z</version_modified>
   <xml_checksum>9BF1E6AC</xml_checksum>
   <class_name>ReportSimulationOutput</class_name>
   <display_name>HPXML Simulation Output Report</display_name>
@@ -1929,7 +1929,7 @@
       <filename>measure.rb</filename>
       <filetype>rb</filetype>
       <usage_type>script</usage_type>
-      <checksum>BA579923</checksum>
+      <checksum>D25984FD</checksum>
     </file>
     <file>
       <filename>test_report_sim_output.rb</filename>
diff --git a/hpxml-measures/ReportUtilityBills/measure.rb b/hpxml-measures/ReportUtilityBills/measure.rb
index 16a5ea6f7..e0a66ae2b 100644
--- a/hpxml-measures/ReportUtilityBills/measure.rb
+++ b/hpxml-measures/ReportUtilityBills/measure.rb
@@ -448,7 +448,7 @@ def report_monthly_output_results(runner, args, timestamps, monthly_data, monthl
           require 'json'
           File.open(monthly_output_path, 'w') { |json| json.write(JSON.pretty_generate(h)) }
         elsif args[:output_format] == 'msgpack'
-          File.open(monthly_output_path, 'w') { |json| h.to_msgpack(json) }
+          File.open(monthly_output_path, 'wb') { |json| h.to_msgpack(json) }
         end
       end
       runner.registerInfo("Wrote monthly bills output to #{monthly_output_path}.")
diff --git a/hpxml-measures/ReportUtilityBills/measure.xml b/hpxml-measures/ReportUtilityBills/measure.xml
index d442f94a6..3218a9e35 100644
--- a/hpxml-measures/ReportUtilityBills/measure.xml
+++ b/hpxml-measures/ReportUtilityBills/measure.xml
@@ -3,8 +3,8 @@
   <schema_version>3.1</schema_version>
   <name>report_utility_bills</name>
   <uid>ca88a425-e59a-4bc4-af51-c7e7d1e960fe</uid>
-  <version_id>71567c67-85c0-4d09-8220-85cc8a1897d6</version_id>
-  <version_modified>2024-05-27T15:54:13Z</version_modified>
+  <version_id>2d6b4393-2fe5-429a-a130-da41a8cb36f0</version_id>
+  <version_modified>2024-05-29T18:54:32Z</version_modified>
   <xml_checksum>15BF4E57</xml_checksum>
   <class_name>ReportUtilityBills</class_name>
   <display_name>Utility Bills Report</display_name>
@@ -180,7 +180,7 @@
       <filename>measure.rb</filename>
       <filetype>rb</filetype>
       <usage_type>script</usage_type>
-      <checksum>4E7FF5BB</checksum>
+      <checksum>99961E51</checksum>
     </file>
     <file>
       <filename>detailed_rates/Sample Flat Rate Min Annual Charge.json</filename>