diff --git a/ci/ignore_build_warnings.txt b/ci/ignore_build_warnings.txt
index 16360faa08..757540e7c1 100644
--- a/ci/ignore_build_warnings.txt
+++ b/ci/ignore_build_warnings.txt
@@ -4,3 +4,4 @@ Warning: Deprecated: Option '--flash_mode' is deprecated. Use '--flash-mode' ins
 Warning: Deprecated: Option '--flash_freq' is deprecated. Use '--flash-freq' instead.
 Warning: Deprecated: Command 'sign_data' is deprecated. Use 'sign-data' instead.
 Warning: Deprecated: Command 'extract_public_key' is deprecated. Use 'extract-public-key' instead.
+warning: unknown kconfig symbol 'EXAMPLE_ETH_PHY_IP101' assigned to 'y' in /__w/esp-protocols/esp-protocols/components/esp_websocket_client/examples/target/sdkconfig.ci
diff --git a/ci/requirements.txt b/ci/requirements.txt
index e8ecae73b6..05c46f1e1f 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -6,3 +6,4 @@ dpkt
 pytest
 idf_build_apps
 netifaces
+esptool>=5.1.0