diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d1bf328..94618a8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.12
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
diff --git a/requirements.txt b/requirements.txt
index 4ec09f0..fbe1e99 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-platformio==6.1.3
+platformio==6.1.16
diff --git a/skarsta/configs/ptester.ini b/skarsta/configs/ptester.ini
index 17cc2da..82f330b 100644
--- a/skarsta/configs/ptester.ini
+++ b/skarsta/configs/ptester.ini
@@ -1,4 +1,4 @@
 [env:ptester]
 board = nanoatmega328
 build_flags = ${common.build_flags}
-src_filter = +<ptester.cpp>
\ No newline at end of file
+build_src_filter = +<ptester.cpp>
diff --git a/skarsta/platformio.ini b/skarsta/platformio.ini
index f488076..80e3123 100644
--- a/skarsta/platformio.ini
+++ b/skarsta/platformio.ini
@@ -16,11 +16,11 @@ build_flags =
 platform = atmelavr
 board = nanoatmega328
 framework = arduino
-src_filter = +<main.cpp>
+build_src_filter = +<main.cpp>
 lib_extra_dirs = ../lib
 lib_deps =
     https://github.com/Martinsos/arduino-lib-hc-sr04.git#1.1.0
-    ArduinoSTL@1.1.0
+    ArduinoSTL@1.3.3
     elapsedMillis@1.0.6
     https://github.com/brianlow/Rotary.git#master
     https://github.com/JCWentzel/PolymorphicButtons.git#1.0.3
diff --git a/yarn-winder/platformio.ini b/yarn-winder/platformio.ini
index a3a549c..19a13f5 100644
--- a/yarn-winder/platformio.ini
+++ b/yarn-winder/platformio.ini
@@ -8,7 +8,7 @@ build_flags = ${common.build_flags}
 framework = arduino
 lib_extra_dirs = ../lib
 lib_deps =
-     ArduinoSTL@1.1.0
+     ArduinoSTL@1.3.3
      elapsedMillis@1.0.6
      Adafruit GFX Library@1.7.5
      adafruit/Adafruit PCD8544 Nokia 5110 LCD library@2.0.1