diff --git a/bsp_stm32_freertos/Dockerfile b/bsp_stm32_freertos/Dockerfile
index beb3214..fa52c60 100644
--- a/bsp_stm32_freertos/Dockerfile
+++ b/bsp_stm32_freertos/Dockerfile
@@ -2,16 +2,20 @@ FROM ubuntu:latest
 # Issues with XPM cross-compiler on alpine..
 # FROM alpine:latest
 
+# Specify the cross compiler version
+# See: https://github.com/xpack-dev-tools/arm-none-eabi-gcc-xpack
+ENV XPM_ARM_XCOMPILER_VERSION = "10.2.1-1.1.2"
+
 RUN apt-get update -y && apt-get upgrade -y
 RUN DEBIAN_FRONTEND="noninteractive" apt-get -y install tzdata
 RUN apt-get install -y cmake g++ npm; \
     npm install --global xpm@latest; \
-    xpm install --global @xpack-dev-tools/arm-none-eabi-gcc@latest
+    xpm install --global @xpack-dev-tools/arm-none-eabi-gcc@${XPM_ARM_XCOMPILER_VERSION}
 # RUN apk add cmake make bash npm; \
 #     npm install --global xpm@latest; \
 #     xpm install --global @xpack-dev-tools/arm-none-eabi-gcc@latest
 
-ENV PATH="/root/.local/xPacks/@xpack-dev-tools/arm-none-eabi-gcc/10.2.1-1.1.2/.content/bin:${PATH}"
+ENV PATH="/root/.local/xPacks/@xpack-dev-tools/arm-none-eabi-gcc/${XPM_ARM_XCOMPILER_VERSION}/.content/bin:${PATH}"
 WORKDIR /usr/src/app
 COPY . .