diff --git a/.github/workflows/elixir_tests.yml b/.github/workflows/elixir_tests.yml
index 6425784..572ec17 100644
--- a/.github/workflows/elixir_tests.yml
+++ b/.github/workflows/elixir_tests.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-20.04
 
     container:
-      image: hexpm/elixir:1.16.0-erlang-26.2.1-debian-bookworm-20231009
+      image: hexpm/elixir:1.17.0-erlang-27.0-debian-bookworm-20240612
 
     steps:
       - name: Install git
diff --git a/.github/workflows/exercism_test_helper_build_test.yml b/.github/workflows/exercism_test_helper_build_test.yml
index 6e06e59..344c8e6 100644
--- a/.github/workflows/exercism_test_helper_build_test.yml
+++ b/.github/workflows/exercism_test_helper_build_test.yml
@@ -3,15 +3,15 @@ name: Test Escript Build
 on:
   push:
     paths:
-      - '.github/**'
-      - 'exercism_test_helper/**'
+      - ".github/**"
+      - "exercism_test_helper/**"
 
 jobs:
   build:
     runs-on: ubuntu-22.04
 
     container:
-      image: hexpm/elixir:1.16.0-erlang-26.2.1-debian-bookworm-20231009
+      image: hexpm/elixir:1.17.0-erlang-27.0-debian-bookworm-20240612
 
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
diff --git a/.tool-versions b/.tool-versions
index 000a611..f8bb424 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-elixir 1.16.0-otp-26
-erlang 26.2.1
+elixir 1.17.0-otp-27
+erlang 27.0
diff --git a/Dockerfile b/Dockerfile
index cf50ca7..b834f82 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM hexpm/elixir:1.16.0-erlang-26.2.1-debian-bookworm-20231009
+FROM hexpm/elixir:1.17.0-erlang-27.0-debian-bookworm-20240612
 
 # Install SSL ca certificates
 RUN apt-get update && \
diff --git a/README.md b/README.md
index 7a0784a..43daa9e 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Exercism Automated Test Runner for Elixir Exercises
 
 ## Environment
 
-The test runner currently targets exercises supporting Elixir >= 1.11 and Erlang/OTP >= 23, but is running on Elixir 1.16.0 on hexpm's `elixir:1.16.0-erlang-26.2.1-debian-bookworm-20231009` image
+The test runner currently targets exercises supporting Elixir >= 1.12 and Erlang/OTP >= 24, but is running on Elixir 1.17.0 on hexpm's `elixir:1.17.0-erlang-27.0-debian-bookworm-20240612` image.
 
 The `Dockerfile` also has added `bash`, `jo` and `jq` to the image.
 
diff --git a/elixir b/elixir
index 63e38a1..6b6bc5b 160000
--- a/elixir
+++ b/elixir
@@ -1 +1 @@
-Subproject commit 63e38a1ab90594a9e0eda48a558a81e7f0c3d1c3
+Subproject commit 6b6bc5b6d3ca3463b7d2b15fbf33f4864e028508
diff --git a/exercism_test_helper/mix.exs b/exercism_test_helper/mix.exs
index d1260ab..6ef5dc6 100644
--- a/exercism_test_helper/mix.exs
+++ b/exercism_test_helper/mix.exs
@@ -5,7 +5,7 @@ defmodule ExercismTestHelper.MixProject do
     [
       app: :exercism_test_helper,
       version: "0.1.2",
-      elixir: "~> 1.16",
+      elixir: "~> 1.17",
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       escript: escript()
diff --git a/exercism_test_helper/mix.lock b/exercism_test_helper/mix.lock
index 3eee9d1..f81b4e7 100644
--- a/exercism_test_helper/mix.lock
+++ b/exercism_test_helper/mix.lock
@@ -1,4 +1,4 @@
 %{
-  "jason": {:hex, :jason, "1.2.2", "ba43e3f2709fd1aa1dce90aaabfd039d000469c05c56f0b8e31978e03fa39052", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "18a228f5f0058ee183f29f9eae0805c6e59d61c3b006760668d8d18ff0d12179"},
+  "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
   "nimble_csv": {:hex, :nimble_csv, "1.1.0", "b1dba4a86be9e03065c9de829050468e591f569100332db949e7ce71be0afc25", [:mix], [], "hexpm", "e986755bc302832cac429be6deda0fc9d82d3c82b47abefb68b3c17c9d949a3f"},
 }