diff --git a/components/app_update/otatool.py b/components/app_update/otatool.py
index 86c630f5af..7a087be16d 100755
--- a/components/app_update/otatool.py
+++ b/components/app_update/otatool.py
@@ -250,9 +250,9 @@ def _erase_ota_partition(target, ota_id):
 
 def main():
     if sys.version_info[0] < 3:
-        print("WARNING: Support for Python 2 is deprecated and will be removed in future versions.")
+        print("WARNING: Support for Python 2 is deprecated and will be removed in future versions.", file=sys.stderr)
     elif sys.version_info[0] == 3 and sys.version_info[1] < 6:
-        print("WARNING: Python 3 versions older than 3.6 are not supported.")
+        print("WARNING: Python 3 versions older than 3.6 are not supported.", file=sys.stderr)
     global quiet
 
     parser = argparse.ArgumentParser("ESP-IDF OTA Partitions Tool")
diff --git a/components/spiffs/spiffsgen.py b/components/spiffs/spiffsgen.py
index 11dc88aa14..a906362900 100755
--- a/components/spiffs/spiffsgen.py
+++ b/components/spiffs/spiffsgen.py
@@ -453,9 +453,9 @@ class SpiffsFS():
 
 def main():
     if sys.version_info[0] < 3:
-        print("WARNING: Support for Python 2 is deprecated and will be removed in future versions.")
+        print("WARNING: Support for Python 2 is deprecated and will be removed in future versions.", file=sys.stderr)
     elif sys.version_info[0] == 3 and sys.version_info[1] < 6:
-        print("WARNING: Python 3 versions older than 3.6 are not supported.")
+        print("WARNING: Python 3 versions older than 3.6 are not supported.", file=sys.stderr)
     parser = argparse.ArgumentParser(description="SPIFFS Image Generator",
                                      formatter_class=argparse.ArgumentDefaultsHelpFormatter)
 
diff --git a/tools/ci/build_examples.sh b/tools/ci/build_examples.sh
index 163db24bce..a28481c6af 100755
--- a/tools/ci/build_examples.sh
+++ b/tools/ci/build_examples.sh
@@ -187,6 +187,8 @@ library/error\.o\
 \|changes choice state\
 \|Compiler version is not supported\
 \|Toolchain version is not supported\
+\|Python 3 versions older than 3\.6 are not supported\.\
+\|Support for Python 2 is deprecated and will be removed in future versions\.\
 "
 
 sort -u "${LOG_SUSPECTED}" | grep -v "${IGNORE_WARNS}" \
diff --git a/tools/ci/check_build_warnings.py b/tools/ci/check_build_warnings.py
index 962451ad7d..d08600cabf 100755
--- a/tools/ci/check_build_warnings.py
+++ b/tools/ci/check_build_warnings.py
@@ -30,7 +30,8 @@ IGNORE_WARNS = [
         r"changes choice state",
         r"crosstool_version_check\.cmake",
         r"CryptographyDeprecationWarning",
-        r"Python 3 versions older than 3.6 are not supported."
+        r"Python 3 versions older than 3.6 are not supported.",
+        r"Support for Python 2 is deprecated and will be removed in future versions.",
     ]
 ]