diff --git a/build/config/SignToolData.json b/build/config/SignToolData.json
index 8068f28435acec33a349750f068b52394918da08..e5b1902f3b28d40474e34b8cab974f691545d752 100644
--- a/build/config/SignToolData.json
+++ b/build/config/SignToolData.json
@@ -185,6 +185,9 @@
     "Microsoft.VisualStudio.Validation.dll",
     "Microsoft.Win32.Primitives.dll",
     "Mono.Cecil.dll",
+    "Mono.Cecil.Mdb.dll",
+    "Mono.Cecil.Pdb.dll",
+    "Mono.Cecil.Rocks.dll",
     "Nerdbank.FullDuplexStream.dll",
     "Newtonsoft.Json.dll",
     "NuGet.CommandLine.2.8.5.nupkg",
diff --git a/src/Setup/DevDivInsertionFiles/BuildDevDivInsertionFiles.vb b/src/Setup/DevDivInsertionFiles/BuildDevDivInsertionFiles.vb
index cf4f25f26c3a953ad8cd3d14e3913d9ff391b0cb..141b0645eedbd6da8ab380cd0ffc2f6d01596a3e 100644
--- a/src/Setup/DevDivInsertionFiles/BuildDevDivInsertionFiles.vb
+++ b/src/Setup/DevDivInsertionFiles/BuildDevDivInsertionFiles.vb
@@ -808,6 +808,9 @@ Public Class BuildDevDivInsertionFiles
         add("Vsix\VisualStudioSetup\System.Composition.Hosting.dll")
         add("Vsix\VisualStudioSetup\System.Composition.TypedParts.dll")
         add("Vsix\VisualStudioSetup\Mono.Cecil.dll")
+        add("Vsix\VisualStudioSetup\Mono.Cecil.Mdb.dll")
+        add("Vsix\VisualStudioSetup\Mono.Cecil.Pdb.dll")
+        add("Vsix\VisualStudioSetup\Mono.Cecil.Rocks.dll")
         add("Vsix\VisualStudioSetup\ICSharpCode.Decompiler.dll")
         add("Dlls\BasicExpressionCompiler\Microsoft.CodeAnalysis.VisualBasic.ExpressionEvaluator.ExpressionCompiler.vsdconfig")
         add("Dlls\BasicResultProvider.Portable\Microsoft.CodeAnalysis.VisualBasic.ExpressionEvaluator.ResultProvider.vsdconfig")