diff --git a/Dockerfile.test b/Dockerfile.test
index 34f5048..06507b1 100644
--- a/Dockerfile.test
+++ b/Dockerfile.test
@@ -6,7 +6,7 @@ ENV ARDUINO_CLI_VERSION=0.34.2 \
   ARDUINO_AVR_VERSION=1.8.5 \
   ESP32_VERSION=2.0.17 \
   SENSEBOXCORE_URL=https://raw.githubusercontent.com/mariopesch/senseBoxMCU-core/master/package_sensebox_index.json \
-  ESP32CORE_URL=https://mariopesch.github.io/sensebox-esp32-dev/package_esp32_index.json \
+  ESP32CORE_URL=https://espressif.github.io/arduino-esp32/package_esp32_index.json \
   SSD1306_PLOT_LIBRARY_URL=https://github.com/sensebox/SSD1306-Plot-Library/archive/refs/tags/v1.0.0.zip \
   SENSEBOX_LIBWEB_URL=https://github.com/sensebox/sensebox-libweb/archive/refs/heads/master.zip \
   SDS011_LIBRARY_URL=https://github.com/sensebox/SDS011-select-serial/archive/refs/heads/master.zip \