diff --git a/bsp_q7s/Dockerfile b/bsp_q7s/Dockerfile
index 0b4bb80b..04184c4a 100644
--- a/bsp_q7s/Dockerfile
+++ b/bsp_q7s/Dockerfile
@@ -6,13 +6,13 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
 RUN apt-get update && apt-get install -y curl cmake g++
 
-# Q7S root filesystem, required for cross-compilation
+# Q7S root filesystem, required for cross-compilation. Use IPv6 for curl
 RUN mkdir -p /usr/rootfs; \
-    curl --tlsv1 https://eive-cloud.irs.uni-stuttgart.de/index.php/s/dnfMy9kGpgynN6J/download/cortexa9hf-neon-xiphos-linux-gnueabi.tar.gz \
+    curl -6 https://eive-cloud.irs.uni-stuttgart.de/index.php/s/dnfMy9kGpgynN6J/download/cortexa9hf-neon-xiphos-linux-gnueabi.tar.gz \
     | tar xvz -C /usr/rootfs
-# Q7S C++ cross-compiler
+# Q7S C++ cross-compiler. Use IPv6 for curl
 RUN mkdir -p /usr/tools; \
-    curl --tlsv1 https://eive-cloud.irs.uni-stuttgart.de/index.php/s/RMsbHydJc6PSqcz/download/gcc-arm-linux-gnueabi.tar.gz \
+    curl -6 https://eive-cloud.irs.uni-stuttgart.de/index.php/s/RMsbHydJc6PSqcz/download/gcc-arm-linux-gnueabi.tar.gz \
     | tar xvz -C /usr/tools
 
 # RUN apk add cmake make g++