diff --git a/.Lib9c.ActionEvaluatorCommonComponents.Tests/Lib9c.ActionEvaluatorCommonComponents.Tests.csproj b/.Lib9c.ActionEvaluatorCommonComponents.Tests/Lib9c.ActionEvaluatorCommonComponents.Tests.csproj
index 8e3825eca5..d5f7ec881e 100644
--- a/.Lib9c.ActionEvaluatorCommonComponents.Tests/Lib9c.ActionEvaluatorCommonComponents.Tests.csproj
+++ b/.Lib9c.ActionEvaluatorCommonComponents.Tests/Lib9c.ActionEvaluatorCommonComponents.Tests.csproj
@@ -15,7 +15,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.2">
+    <PackageReference Include="coverlet.collector" Version="6.0.3">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
diff --git a/.Lib9c.Miner.Tests/Lib9c.Proposer.Tests.csproj b/.Lib9c.Miner.Tests/Lib9c.Proposer.Tests.csproj
index e5b1dba72c..5a48c4980c 100644
--- a/.Lib9c.Miner.Tests/Lib9c.Proposer.Tests.csproj
+++ b/.Lib9c.Miner.Tests/Lib9c.Proposer.Tests.csproj
@@ -15,7 +15,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.2">
+    <PackageReference Include="coverlet.collector" Version="6.0.3">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>