diff --git a/.agents/plugins/marketplace.json b/.agents/plugins/marketplace.json
index d9dc5e5..f0d0873 100644
--- a/.agents/plugins/marketplace.json
+++ b/.agents/plugins/marketplace.json
@@ -177,7 +177,7 @@
       "source": {
         "source": "url",
         "url": "https://github.com/gemini-cli-extensions/knowledge-catalog.git",
-        "ref": "0.5.2"
+        "ref": "0.5.3"
       },
       "description": "Skills for Knowledge Catalog.",
       "policy": {
diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 126417a..ffc9329 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -122,7 +122,7 @@
       "source": {
         "source": "github",
         "repo": "gemini-cli-extensions/knowledge-catalog",
-        "ref": "0.5.2"
+        "ref": "0.5.3"
       },
       "description": "Skills for Knowledge Catalog."
     },
diff --git a/.gitmodules b/.gitmodules
index 6cf5050..54766c8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -53,7 +53,7 @@
 [submodule "knowledge-catalog"]
 	path = plugins/knowledge-catalog
 	url = https://github.com/gemini-cli-extensions/knowledge-catalog.git
-	branch = 0.5.2
+	branch = 0.5.3
 [submodule "db-context-enrichment"]
 	path = plugins/db-context-enrichment
 	url = https://github.com/GoogleCloudPlatform/db-context-enrichment.git
diff --git a/plugins/knowledge-catalog b/plugins/knowledge-catalog
index ed4eca8..1967022 160000
--- a/plugins/knowledge-catalog
+++ b/plugins/knowledge-catalog
@@ -1 +1 @@
-Subproject commit ed4eca831c7291929ddc64d9d6de9137c084dffd
+Subproject commit 1967022c834ed03b7ea52e483d149f04a04f31b5