diff --git a/.tool-versions b/.tool-versions
index 9600c0f..9a237a4 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,3 +1,3 @@
-elixir 1.18.2-otp-27
+elixir 1.18.1-otp-27
 erlang 27.2.1
 nodejs 23.7.0
diff --git a/Dockerfile b/Dockerfile
index 11c23d0..dae5ed2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM elixir:1.18.2-otp-27-alpine AS build
+FROM elixir:1.18.1-otp-27-alpine AS build
 
 # install build dependencies
 RUN apk add --no-cache build-base npm git python3