diff --git a/.github/workflows/mcp-diff.yml b/.github/workflows/mcp-diff.yml
index eeb24eaea..3c38e4902 100644
--- a/.github/workflows/mcp-diff.yml
+++ b/.github/workflows/mcp-diff.yml
@@ -55,7 +55,7 @@ jobs:
         # initialize envelope, tool-annotation default hints; probes each server at its
         # own newest spec via the stateless SEP-2575 server/discover path. Keeps the
         # go-sdk v1.6.1 -> v1.7.0-pre.1 bump an honest, signal-only diff. github/copilot-mcp-core#1709.
-        uses: SamMorrowDrums/mcp-server-diff@3521651bb0d3cc267a23df8d94a2a645556980a4 # v3.0.0
+        uses: SamMorrowDrums/mcp-server-diff@40d992e0a220e5b63378758f9a40d6a8982898d2 # v3.0.0
         with:
           setup_go: "false"
           install_command: |
@@ -120,7 +120,7 @@ jobs:
 
       - name: Run MCP Server Diff (streamable-http)
         # Pinned to mcp-server-diff v3.0.0 — see rationale on the stdio job above.
-        uses: SamMorrowDrums/mcp-server-diff@3521651bb0d3cc267a23df8d94a2a645556980a4 # v3.0.0
+        uses: SamMorrowDrums/mcp-server-diff@40d992e0a220e5b63378758f9a40d6a8982898d2 # v3.0.0
         with:
           setup_go: "false"
           install_command: |