diff --git a/configs/hortense.yaml b/configs/hortense.yaml
index 0141e6d..330ea83 100644
--- a/configs/hortense.yaml
+++ b/configs/hortense.yaml
@@ -1,7 +1,7 @@
 ---
 parsl_log_level: WARNING
 container_engine: 'apptainer'
-container_uri: 'oras://ghcr.io/molmod/psiflow:main_cu118'
+container_uri: 'oras://ghcr.io/molmod/psiflow:4.0.0-rc0_cu118'
 default_threads: 8
 ModelEvaluation:
   cores_per_worker: 12
diff --git a/configs/lumi.yaml b/configs/lumi.yaml
index e041967..b7102c0 100644
--- a/configs/lumi.yaml
+++ b/configs/lumi.yaml
@@ -1,7 +1,7 @@
 ---
 parsl_log_level: WARNING
 container_engine: 'singularity'
-container_uri: 'oras://ghcr.io/molmod/psiflow:main_rocm5.6'
+container_uri: 'oras://ghcr.io/molmod/psiflow:4.0.0-rc0_rocm5.6'
 default_threads: 8
 CP2K:
   cores_per_worker: 32