diff --git a/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2 b/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
index 398d814..bf99d0c 100644
--- a/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/keycloak/docker_compose/compose.yaml.j2
@@ -22,7 +22,7 @@
 
 services:
   keycloak:
-    image: git.hamburg.ccc.de/ccchh/oci-images/keycloak:26.4@sha256:65d65fa0e858a608fd3e7d16ecfd7a5ced2fba4ab22a8fd3b86f3742ecec0a83
+    image: git.hamburg.ccc.de/ccchh/oci-images/keycloak:26.4@sha256:bf6c9afa692c375e558ccc1c9986bd25e39f54450b09c666e2e7bed7edf803b3
     pull_policy: always
     restart: unless-stopped
     command: start --optimized
@@ -46,7 +46,7 @@ services:
       - "8080:8080"
 
   db:
-    image: docker.io/library/postgres:15.14@sha256:9541969afa16d1ac724e16d1cf3c26ddd0c5bae5dd1c230118a7f5b9c14cde1f
+    image: docker.io/library/postgres:15.14@sha256:424e79b81868f5fc5cf515eaeac69d288692ebcca7db86d98f91b50d4bce64bb
     restart: unless-stopped
     networks:
       - keycloak
diff --git a/resources/chaosknoten/pad/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pad/docker_compose/compose.yaml.j2
index 014b8af..5513381 100644
--- a/resources/chaosknoten/pad/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/pad/docker_compose/compose.yaml.j2
@@ -3,7 +3,7 @@
 
 services:
   database:
-    image: docker.io/library/postgres:15-alpine@sha256:2e50ad404aead120409575d21758230cc295aec52dfa05ece9b4d0429bc38636
+    image: docker.io/library/postgres:15-alpine@sha256:64583b3cb4f2010277bdd9749456de78e5c36f8956466ba14b0b96922e510950
     environment:
       - "POSTGRES_USER=hedgedoc"
       - "POSTGRES_PASSWORD={{ secret__hedgedoc_db_password }}"
diff --git a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2 b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
index 66f6172..081aa2a 100644
--- a/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/pretalx/docker_compose/compose.yaml.j2
@@ -3,7 +3,7 @@
 
 services:
   database:
-    image: docker.io/library/postgres:15-alpine@sha256:2e50ad404aead120409575d21758230cc295aec52dfa05ece9b4d0429bc38636
+    image: docker.io/library/postgres:15-alpine@sha256:64583b3cb4f2010277bdd9749456de78e5c36f8956466ba14b0b96922e510950
     environment:
       - "POSTGRES_USER=pretalx"
       - "POSTGRES_PASSWORD={{ secret__pretalx_db_password }}"
diff --git a/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2 b/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
index 057da55..deb9f50 100644
--- a/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
+++ b/resources/chaosknoten/tickets/docker_compose/compose.yaml.j2
@@ -1,7 +1,7 @@
 ---
 services:
   database:
-    image: docker.io/library/postgres:15-alpine@sha256:2e50ad404aead120409575d21758230cc295aec52dfa05ece9b4d0429bc38636
+    image: docker.io/library/postgres:15-alpine@sha256:64583b3cb4f2010277bdd9749456de78e5c36f8956466ba14b0b96922e510950
     environment:
       - "POSTGRES_USER=pretix"
       - "POSTGRES_PASSWORD={{ secret__pretix_db_password }}"