diff --git a/.github/arduino-ci/Dockerfile b/.github/arduino-ci/Dockerfile
index 00e80cf..4221674 100644
--- a/.github/arduino-ci/Dockerfile
+++ b/.github/arduino-ci/Dockerfile
@@ -37,11 +37,11 @@ RUN arduino-cli config add board_manager.additional_urls \
   curl https://drazzy.com/package_drazzy.com_index.json >~/.arduino15/package_drazzy.com_index.json && \
   arduino-cli update
 
-RUN arduino-cli core install megaTinyCore:megaavr
-RUN arduino-cli core install esp32:esp32
+RUN arduino-cli core install esp32:esp32@2.0.14
 RUN arduino-cli core install esp8266:esp8266
 RUN arduino-cli core install STMicroelectronics:stm32
 RUN arduino-cli core install rp2040:rp2040
+RUN arduino-cli core install megaTinyCore:megaavr
 
 RUN apt-get install -y \
   python3 \