diff --git a/.gitignore b/.gitignore
index 676c016..baadec4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,4 @@ flash
 version.h_local
 docs/build
 docs/source/_build
-
+multigeiger/multigeiger.ino.cpp
diff --git a/platformio-example.ini b/platformio-example.ini
index 355d52a..99784ff 100644
--- a/platformio-example.ini
+++ b/platformio-example.ini
@@ -21,7 +21,7 @@ build_flags =
   -D CFG_sx1276_radio=1
   -D ARDUINO_LMIC_PROJECT_CONFIG_H_SUPPRESS=1
   -D hal_init=LMICHAL_init
-platform = espressif32
+platform = espressif32@^3.5.0
 framework = arduino
 monitor_speed=115200
 lib_deps=