diff --git a/.github/workflows/rworkflows.yml b/.github/workflows/rworkflows.yml
index 7a4a15e2..32b89c01 100644
--- a/.github/workflows/rworkflows.yml
+++ b/.github/workflows/rworkflows.yml
@@ -25,7 +25,7 @@ jobs:
         - os: ubuntu-latest
           r: auto
           bioc: release
-          cont: ghcr.io/bioconductor/bioconductor_docker:latest
+          cont: ghcr.io/bioconductor/bioconductor_docker:RELEASE_3_18
           python-version: 3.11
         - os: macOS-latest
           r: latest
diff --git a/.github/workflows/rworkflows_static.yml b/.github/workflows/rworkflows_static.yml
index 518edf8b..16236933 100644
--- a/.github/workflows/rworkflows_static.yml
+++ b/.github/workflows/rworkflows_static.yml
@@ -44,7 +44,7 @@ jobs:
         - os: ubuntu-latest
           r: auto
           bioc: release
-          cont: ghcr.io/bioconductor/bioconductor_docker:latest
+          cont: ghcr.io/bioconductor/bioconductor_docker:RELEASE_3_18
           rspm: ~
         - os: macOS-latest
           bioc: release