diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index f76ffca..2690e8d 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -20,8 +20,9 @@ env:
   IMAGE_NAME: ${{ github.repository }}
   TEST_TAG: ${{ github.repository }}:test
   TEST_EXPECTED_NODE_OUTPUT: "v20.11.1"
-  TEST_EXPECTED_ELIXIR_OUTPUT: "Elixir 1.16.2 (compiled with Erlang/OTP 25)"
-  TEST_EXPECTED_ERLANG_OUTPUT: "25.3.2.10"
+  # In transport-site: elixir -v
+  TEST_EXPECTED_ELIXIR_OUTPUT: "Elixir 1.16.2 (compiled with Erlang/OTP 26)"
+  TEST_EXPECTED_ERLANG_OUTPUT: "25.2.3"
 jobs:
   build-and-push-image:
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index 2711fad..b6e9d7e 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Scripts and config files for provision and deploy transport and required service
 # New release process (GitHub actions + GitHub Container Registry)
 
 To create a new release as a Docker image:
-1. Update the code (Dockerfile and Github workflow tests), create a pull request, get your changes merged into master
+1. Update the code (Dockerfile and Github workflow tests), create a pull request, get your changes merged into master. No need to test your code locally: you can rely on Github workflow.
 2. Create a GitHub release (with tag name == release name), with a changelog on the page https://github.com/etalab/transport-ops/releases
    1. Use locally `rake get_image_version` to generate the correct tag / release name
    2. Then create a release using this generated name as both the tag and the release title. You can auto-generate the release notes.
diff --git a/transport-site/Dockerfile b/transport-site/Dockerfile
index 412775d..e70f817 100644
--- a/transport-site/Dockerfile
+++ b/transport-site/Dockerfile
@@ -21,7 +21,7 @@ FROM ghcr.io/etalab/transport-tools:v1.0.7 as transport-tools
 # So again, to upgrade this, check out : 
 #
 # https://hub.docker.com/r/hexpm/elixir
-FROM hexpm/elixir:1.16.2-erlang-25.3.2.10-ubuntu-focal-20240123
+FROM hexpm/elixir:1.16.2-erlang-26.2.3-ubuntu-focal-20240123
 
 ARG DEBIAN_FRONTEND=noninteractive
 ENV TZ=Europe/Paris