diff --git a/docker/Dockerfile b/docker/Dockerfile
index c1b815d0..22174fbc 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -24,12 +24,12 @@ RUN apt update && \
         git \
         && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add - && add-apt-repository "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-11 main"
+RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add - && add-apt-repository "deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic main"
 
 RUN apt update && \
     apt install -y --no-install-recommends \
-        libclang-11-dev \
-        clang-format-11 \
+        libclang-12-dev \
+        clang-format-12 \
         && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --profile=minimal --target thumbv7em-none-eabi thumbv7em-none-eabihf && \
diff --git a/docker/syntax_check.sh b/docker/syntax_check.sh
index d45b41b7..e7be6a8e 100755
--- a/docker/syntax_check.sh
+++ b/docker/syntax_check.sh
@@ -2,7 +2,7 @@
 
 # set -e
 
-CLANG_FORMAT_BIN="/usr/bin/clang-format-11"
+CLANG_FORMAT_BIN="/usr/bin/clang-format-12"
 PATH="$HOME/.cargo/bin:${PATH}"
 
 PROJECT_DIR=$(pwd)