diff --git a/.github/workflows/elixir_tests.yml b/.github/workflows/elixir_tests.yml
index 25e27b2..e1cb9fc 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:1.18.0-erlang-27.2-debian-bookworm-20241202
+      image: hexpm/elixir:1.18.1-erlang-27.2-debian-bookworm-20241223
 
     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 8bebdbf..f132360 100644
--- a/.github/workflows/exercism_test_helper_build_test.yml
+++ b/.github/workflows/exercism_test_helper_build_test.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     container:
-      image: hexpm/elixir:1.18.0-erlang-27.2-debian-bookworm-20241202
+      image: hexpm/elixir:1.18.1-erlang-27.2-debian-bookworm-20241223
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
diff --git a/.tool-versions b/.tool-versions
index 031d43b..2254cc0 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-elixir 1.18.0-otp-27
+elixir 1.18.1-otp-27
 erlang 27.2
diff --git a/Dockerfile b/Dockerfile
index b7973f9..6ae88d6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM hexpm/elixir:1.18.0-erlang-27.2-debian-bookworm-20241202
+FROM hexpm/elixir:1.18.1-erlang-27.2-debian-bookworm-20241223
 
 # Install SSL ca certificates
 RUN apt-get update && \
diff --git a/README.md b/README.md
index 81c0d8b..27751e6 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 >= 1.14 and Erlang/OTP >= 25, but is running on Elixir 1.18.0 on hexpm's `elixir:1.18.0-erlang-27.2-debian-bookworm-20241202` image.
+The test runner currently targets exercises supporting Elixir >= 1.14 and Erlang/OTP >= 25, but is running on Elixir 1.18.0 on hexpm's `elixir:1.18.1-erlang-27.2-debian-bookworm-20241223` image.
 
 The `Dockerfile` also has added `bash`, `jo` and `jq` to the image.