diff --git a/EnvelopeGenerator.sln b/EnvelopeGenerator.sln
index 48339de7..0a2700f6 100644
--- a/EnvelopeGenerator.sln
+++ b/EnvelopeGenerator.sln
@@ -22,6 +22,7 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{134D4164-B291-4E19-99B9-E4FA3AFAB62C}"
 	ProjectSection(SolutionItems) = preProject
 		COPILOT_CONTEXT_EN.md = COPILOT_CONTEXT_EN.md
+		OPEN_TASK_SESSION_12.md = OPEN_TASK_SESSION_12.md
 	EndProjectSection
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{0CBC2432-A561-4440-89BC-671B66A24146}"