diff --git a/.tool-versions b/.tool-versions
index b419fa676..a63a8d922 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,8 +1,8 @@
 # These are used for the dev environment.
 # This should match the versions used in the built product.
 nodejs 20.14.0
-elixir 1.18.2-otp-27
-erlang 27.2.1
+elixir 1.18.4-otp-27
+erlang 27.3.4.1
 
 # Used for static analysis
 python 3.11.9
diff --git a/elixir/Dockerfile b/elixir/Dockerfile
index b22c2b599..bf512a483 100644
--- a/elixir/Dockerfile
+++ b/elixir/Dockerfile
@@ -1,8 +1,10 @@
-ARG ALPINE_VERSION="3.20.5"
-ARG ERLANG_VERSION="27.2.1"
-ARG ERLANG_DOWNLOAD_SHA256="07982134e10637dde57cf9cdc6dda6f65425810229986136d184766d4db9eda3"
-ARG ELIXIR_VERSION="1.18.2"
-ARG ELIXIR_DOWNLOAD_SHA256="efc8d0660b56dd3f0c7536725a95f4d8b6be9f11ca9779d824ad79377753e916"
+ARG ALPINE_VERSION="3.20.6"
+ARG ERLANG_VERSION="27.3.4.1"
+# curl -fsSL https://github.com/erlang/otp/releases/download/OTP-27.3.4.1/otp_src_27.3.4.1.tar.gz | sha256
+ARG ERLANG_DOWNLOAD_SHA256="2672f0c52b9ff39695b9c8f99cd1846ed9e47e21cd5b045ccdd08719a3019652"
+ARG ELIXIR_VERSION="1.18.4"
+# curl -fsSL https://github.com/elixir-lang/elixir/archive/refs/tags/v1.18.4.tar.gz | sha256
+ARG ELIXIR_DOWNLOAD_SHA256="8e136c0a92160cdad8daa74560e0e9c6810486bd232fbce1709d40fcc426b5e0"
 
 FROM alpine:${ALPINE_VERSION} AS base