diff --git a/Containers/postgresql/Dockerfile b/Containers/postgresql/Dockerfile
index 27b4e956..df01436c 100644
--- a/Containers/postgresql/Dockerfile
+++ b/Containers/postgresql/Dockerfile
@@ -1,5 +1,5 @@
-# From https://github.com/docker-library/postgres/blob/master/14/alpine/Dockerfile
-FROM postgres:14.6-alpine
+# From https://github.com/docker-library/postgres/blob/master/15/alpine/Dockerfile
+FROM postgres:15.1-alpine
 
 RUN apk add --no-cache bash openssl shadow netcat-openbsd grep mawk
 
diff --git a/Containers/postgresql/init-user-db.sh b/Containers/postgresql/init-user-db.sh
index 8c1f2dc9..cfd3827a 100644
--- a/Containers/postgresql/init-user-db.sh
+++ b/Containers/postgresql/init-user-db.sh
@@ -6,6 +6,8 @@ touch "$DUMP_DIR/initialization.failed"
 psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
 	CREATE USER "oc_$POSTGRES_USER" WITH PASSWORD '$POSTGRES_PASSWORD' CREATEDB;
 	ALTER DATABASE "$POSTGRES_DB" OWNER TO "oc_$POSTGRES_USER";
+	GRANT ALL PRIVILEGES ON DATABASE "$POSTGRES_DB" TO "oc_$POSTGRES_USER";
+	GRANT ALL PRIVILEGES ON SCHEMA public TO "oc_$POSTGRES_USER";
 EOSQL
 
 rm "$DUMP_DIR/initialization.failed"
diff --git a/Containers/postgresql/start.sh b/Containers/postgresql/start.sh
index 5dfbb400..87e8706d 100644
--- a/Containers/postgresql/start.sh
+++ b/Containers/postgresql/start.sh
@@ -110,6 +110,8 @@ if ( [ -f "$DATADIR/PG_VERSION" ] && [ "$PG_MAJOR" != "$(cat "$DATADIR/PG_VERSIO
         psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
             CREATE USER "$DB_OWNER" WITH PASSWORD '$POSTGRES_PASSWORD' CREATEDB;
             ALTER DATABASE "$POSTGRES_DB" OWNER TO "$DB_OWNER";
+            GRANT ALL PRIVILEGES ON DATABASE "$POSTGRES_DB" TO "$DB_OWNER";
+            GRANT ALL PRIVILEGES ON SCHEMA public TO "$DB_OWNER";
 EOSQL
     fi