diff --git a/.tool-versions b/.tool-versions
index fb36923..368092a 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
 elixir 1.18.2-otp-27
-erlang 27.2.4
+erlang 27.3
diff --git a/Dockerfile b/Dockerfile
index b797331..646abbc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,8 +14,8 @@
 #   - Ex: hexpm/elixir:1.15.4-erlang-26.0.2-debian-bullseye-20230612-slim
 #
 ARG ELIXIR_VERSION=1.18.2
-ARG OTP_VERSION=27.2.4
-ARG DEBIAN_VERSION=bullseye-20250203-slim
+ARG OTP_VERSION=27.3
+ARG DEBIAN_VERSION=bullseye-20250224-slim
 
 ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
 ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"
diff --git a/README.md b/README.md
index e773018..bbc93be 100644
--- a/README.md
+++ b/README.md
@@ -8,13 +8,13 @@ The purpose of this example is to provide details as to how one would go about u
 
 - Elixir 1.18.2 or newer
 
-- Erlang 27.2.1 or newer
+- Erlang 27.3 or newer
 
-- Phoenix 1.7.18 or newer
+- Phoenix 1.7.20 or newer
 
 - PostgreSQL 17.2 or newer
 
-Note: This tutorial was updated on macOS 15.2.
+Note: This tutorial was updated on macOS 15.3.1.
 
 ## Communication