diff --git a/.github/workflows/lux.yml b/.github/workflows/lux.yml
index 1e887b2..325c43a 100644
--- a/.github/workflows/lux.yml
+++ b/.github/workflows/lux.yml
@@ -17,7 +17,7 @@ jobs:
           luaVersion: "5.5"
       - uses: lumen-oss/gh-actions-lux@v1
         with:
-          version: "0.53.3"
+          version: "0.55.1"
       - run: lx check --warnings-as-errors
 
   test:
@@ -30,5 +30,5 @@ jobs:
           luaVersion: "5.5"
       - uses: lumen-oss/gh-actions-lux@v1
         with:
-          version: "0.53.3"
+          version: "0.55.1"
       - run: lx test
diff --git a/README.md b/README.md
index a6cfdf8..d0415ad 100644
--- a/README.md
+++ b/README.md
@@ -304,7 +304,7 @@ Example:
 ### `lux_version` (optional)
 
 The [lux](https://lux.lumen-labs.org/) version installed and run by this action.
-Defaults to `0.53.3`.
+Defaults to `0.55.1`.
 
 Example:
 
diff --git a/action.yml b/action.yml
index 4e8436a..11d1fcd 100644
--- a/action.yml
+++ b/action.yml
@@ -89,7 +89,7 @@ inputs:
     description: |
       The lux version to install and run.
     required: false
-    default: "0.53.3"
+    default: "0.55.1"
 runs:
   using: "composite"
   steps: