diff --git a/bci_tester/data.py b/bci_tester/data.py
index 90887fe1..fe1d2401 100755
--- a/bci_tester/data.py
+++ b/bci_tester/data.py
@@ -727,6 +727,12 @@ def create_BCI(
         available_versions=pg_versions,
         forwarded_ports=[PortForwarding(container_port=5432)],
         extra_environment_variables={"POSTGRES_PASSWORD": POSTGRES_PASSWORD},
+        # https://github.com/SUSE/BCI-tests/issues/647
+        healthcheck_timeout=(
+            timedelta(minutes=6)
+            if LOCALHOST.system_info.arch == "ppc64le"
+            else None
+        ),
     )
     for pg_ver, pg_versions in (
         (14, ["tumbleweed"]),
diff --git a/tests/test_postgres.py b/tests/test_postgres.py
index d9de8391..11a4f092 100644
--- a/tests/test_postgres.py
+++ b/tests/test_postgres.py
@@ -70,7 +70,7 @@ def _generate_test_matrix() -> List[ParameterSet]:
                         ),
                         # https://github.com/SUSE/BCI-tests/issues/647
                         healthcheck_timeout=(
-                            timedelta(minutes=3)
+                            timedelta(minutes=6)
                             if LOCALHOST.system_info.arch == "ppc64le"
                             else None
                         ),