diff --git a/appveyor.yml b/appveyor.yml
index 79804e5..18a98e1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -85,7 +85,7 @@ test_script:
       vstest.console /logger:Appveyor /inIsolation Capnp.Net.Runtime.Tests\bin\Debug\net471\Capnp.Net.Runtime.Tests.dll
       vstest.console /logger:Appveyor /inIsolation Capnp.Net.Runtime.Tests\bin\Release\netcoreapp3.1\Capnp.Net.Runtime.Tests.dll
       powershell -File .\scripts\measure-coverage.ps1
-      csmacnz.Coveralls --opencover -i "coverage\coverage.xml" --repoToken %COVERALLS_REPO_TOKEN%
+      csmacnz.Coveralls --lcov -i "coverage\lcov.info" --repoToken %COVERALLS_REPO_TOKEN%
 on_finish :
   # any cleanup in here
 deploy:
diff --git a/coverlet.runsettings b/coverlet.runsettings
index 878e795..9a6941b 100644
--- a/coverlet.runsettings
+++ b/coverlet.runsettings
@@ -8,7 +8,7 @@
     <DataCollectors>
       <DataCollector friendlyName="XPlat code coverage">
         <Configuration>
-          <Format>cobertura</Format>
+          <Format>opencover</Format>
           <Include>[Capnp.Net.Runtime]Capnp.*,[CapnpC.CSharp.Generator]CapnpC.CSharp.Generator.*</Include>
           <Exclude>[CapnpC.CSharp.Generator]CapnpC.CSharp.Generator.Schema.*</Exclude>
           <ExcludeByAttribute>GeneratedCodeAttribute,CompilerGeneratedAttribute</ExcludeByAttribute>
diff --git a/scripts/measure-coverage.ps1 b/scripts/measure-coverage.ps1
index 42f8c36..93b0180 100644
--- a/scripts/measure-coverage.ps1
+++ b/scripts/measure-coverage.ps1
@@ -33,4 +33,4 @@ If(!(test-path $coverageReportDir)) {
   --results-directory $resultsDir `
   --settings "$rootDir\coverlet.runsettings"
 
-  ReportGenerator.exe -reports:"$coverageFile" -targetdir:"$coverageReportDir" -reportTypes:"Html"
+  ReportGenerator.exe -reports:"$coverageFile" -targetdir:"$coverageReportDir" -reportTypes:"Html;lcov"