diff --git a/docker-compose.production.yml b/docker-compose.production.yml
index 0986aa2..212daa1 100644
--- a/docker-compose.production.yml
+++ b/docker-compose.production.yml
@@ -4,6 +4,10 @@ services:
   postgres:
     image: postgres:15-alpine
     container_name: picpeak-postgres
+    # User namespace configuration for Docker daemon sysctl compatibility
+    # Fixes OCI runtime errors on systems with custom sysctl configurations
+    # See: https://github.com/the-luap/picpeak/issues/46
+    userns_mode: "host"
     environment:
       POSTGRES_USER: ${DB_USER:-picpeak}
       POSTGRES_PASSWORD: ${DB_PASSWORD}
@@ -22,6 +26,10 @@ services:
   redis:
     image: redis:7-alpine
     container_name: picpeak-redis
+    # User namespace configuration for Docker daemon sysctl compatibility
+    # Fixes OCI runtime errors on systems with custom sysctl configurations
+    # See: https://github.com/the-luap/picpeak/issues/46
+    userns_mode: "host"
     command: redis-server --requirepass ${REDIS_PASSWORD}
     volumes:
       - redis-data:/data
diff --git a/docker-compose.yml b/docker-compose.yml
index b67a585..f661437 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -60,6 +60,10 @@ services:
     image: postgres:15-alpine
     container_name: picpeak-postgres
     restart: unless-stopped
+    # User namespace configuration for Docker daemon sysctl compatibility
+    # Fixes OCI runtime errors on systems with custom sysctl configurations
+    # See: https://github.com/the-luap/picpeak/issues/46
+    userns_mode: "host"
     environment:
       - POSTGRES_USER=${DB_USER}
       - POSTGRES_PASSWORD=${DB_PASSWORD}
@@ -83,6 +87,10 @@ services:
     image: redis:7-alpine
     container_name: picpeak-redis
     restart: unless-stopped
+    # User namespace configuration for Docker daemon sysctl compatibility
+    # Fixes OCI runtime errors on systems with custom sysctl configurations
+    # See: https://github.com/the-luap/picpeak/issues/46
+    userns_mode: "host"
     command: redis-server --appendonly yes --requirepass ${REDIS_PASSWORD:-picpeak_redis_pass}
     volumes:
       - redis-data:/data