diff --git a/esphome/components/bme68x_bsec2/__init__.py b/esphome/components/bme68x_bsec2/__init__.py
index 4200b2f0b8..5f0afa9c9f 100644
--- a/esphome/components/bme68x_bsec2/__init__.py
+++ b/esphome/components/bme68x_bsec2/__init__.py
@@ -186,8 +186,8 @@ async def to_code_base(config):
         cg.add_library("SPI", None)
     cg.add_library(
         "BME68x Sensor library",
-        "1.3.40408",
-        "https://github.com/boschsensortec/Bosch-BME68x-Library",
+        None,
+        "https://github.com/boschsensortec/Bosch-BME68x-Library#v1.3.40408",
     )
     cg.add_library(
         "BSEC2 Software Library",
diff --git a/script/merge_component_configs.py b/script/merge_component_configs.py
index 5e98f1fef5..41bbafcd02 100755
--- a/script/merge_component_configs.py
+++ b/script/merge_component_configs.py
@@ -384,7 +384,7 @@ def merge_component_configs(
     # Write merged config
     output_file.parent.mkdir(parents=True, exist_ok=True)
     yaml_content = yaml_util.dump(merged_config_data)
-    output_file.write_text(yaml_content)
+    output_file.write_text(yaml_content, encoding="utf-8")
 
     print(f"Successfully merged {len(component_names)} components into {output_file}")