diff --git a/README.md b/README.md
index 291acfe..6f30810 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ with [umbra-core](https://github.com/bkd-dotcom/umbra-core).
 ## Prerequisite
 
 ```bash
-pip install "umbra-core @ git+https://github.com/bkd-dotcom/umbra-core@v0.5.3"
+pip install "umbra-core @ git+https://github.com/bkd-dotcom/umbra-core@v0.5.4"
 ```
 
 Add a `.umbra/admission.yaml` to your repo (allowed/forbidden paths, diff budget,
diff --git a/config.toml b/config.toml
index 0881be1..22232b2 100644
--- a/config.toml
+++ b/config.toml
@@ -1,5 +1,5 @@
 # Umbra MCP server for Codex — add to ~/.codex/config.toml
-# Requires: pip install "umbra-core @ git+https://github.com/bkd-dotcom/umbra-core@v0.5.3"
+# Requires: pip install "umbra-core @ git+https://github.com/bkd-dotcom/umbra-core@v0.5.4"
 
 [mcp_servers.umbra]
 command = "python"