diff --git a/.github/scripts/sketch_utils.sh b/.github/scripts/sketch_utils.sh
index 3a856202e51..55a1d5d8c2b 100755
--- a/.github/scripts/sketch_utils.sh
+++ b/.github/scripts/sketch_utils.sh
@@ -136,7 +136,7 @@ function build_sketch(){ # build_sketch <ide_path> <user_path> <path-to-ino> [ex
         currfqbn=`echo $fqbn | jq -r --argjson i $i '.[$i]'`
         sketchname=$(basename $sketchdir)
         echo "Building $sketchname with FQBN=$currfqbn"
-        $ide_path/arduino-builder -compile -logger=human -core-api-version=10810 \
+        $ide_path/arduino-builder -prefs="compiler.warning_flags.all=-Wall -Werror=all -Wextra" -compile -logger=human -core-api-version=10810 \
             -fqbn=\"$currfqbn\" \
             -warnings="all" \
             -tools "$ide_path/tools-builder" \
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index f2f75d7b1ac..73262be0129 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -42,6 +42,7 @@ jobs:
           ./tools/dist
           ~/arduino_ide
         key: ${{ runner.os }}-${{ hashFiles('package/package_esp32_index.template.json',
+                                            'platform.txt',
                                             'tools/get.py',
                                             '.github/scripts/install-arduino-ide.sh') }}
     - name: Build Sketches
diff --git a/platform.txt b/platform.txt
index 3cb29298791..8404c4fa766 100644
--- a/platform.txt
+++ b/platform.txt
@@ -106,8 +106,8 @@ compiler.size.cmd={compiler.prefix}size
 compiler.warning_flags=-w
 compiler.warning_flags.none=-w
 compiler.warning_flags.default=
-compiler.warning_flags.more=-Wall -Werror=all
-compiler.warning_flags.all=-Wall -Werror=all -Wextra
+compiler.warning_flags.more=-Wall
+compiler.warning_flags.all=-Wall -Wextra
 
 # These can be overridden in platform.local.txt
 compiler.c.extra_flags=