diff --git a/.devcontainer/agent-versions.env b/.devcontainer/agent-versions.env
index e2c1b30..23badd2 100644
--- a/.devcontainer/agent-versions.env
+++ b/.devcontainer/agent-versions.env
@@ -6,8 +6,8 @@ FIRSTDRAFT_CLI_VERSION=0.8.2
 # CLI 0.8.x uses First Draft API 0.7.x and defaults to local root output.
 # The wrapper selects this production origin; `firstdraft login --device` saves its login.
 FIRSTDRAFT_CLI_DEFAULT_API_URL=https://firstdraft.com
-# Shared Claude/Codex authoring Skill; exact source of plugin 0.8.13 (tag claude-v0.8.13; CLI 0.8.2, API 0.7).
-FIRSTDRAFT_SKILLS_REVISION=97b3bb8d1b6b4f56b38b4a404d46ec50f8d2bfa5
+# Shared Claude/Codex authoring Skill; exact source of plugin 0.8.15 (tag claude-v0.8.15; CLI 0.8.2, API 0.7).
+FIRSTDRAFT_SKILLS_REVISION=fc67f08f6293b135c7d87d7dba53c5df87c0a90a
 FIRSTDRAFT_CLAUDE_SKILL_NAME=create-full-stack-app
 # Codex namespaces the canonical source checkout with its root plugin manifest.
 FIRSTDRAFT_CODEX_SKILL_NAME=firstdraft:create-full-stack-app