diff --git a/Dockerfile b/Dockerfile
index 3afbcbe..a3c14fc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM rust:1.66.0
+FROM rust:1.66.1
 
 LABEL "com.github.actions.name"="Rust Action"
 LABEL "com.github.actions.description"="'Silverbullet' for a quickstart Rust CI based upon Github Actions"
diff --git a/README.md b/README.md
index 57b7ff8..b7492fd 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 *What's inside the "box":*
 
-* Rust 1.66.0
+* Rust 1.66.1
 * Rustfmt
 * Clippy
 * Cargo Release