diff --git a/python/Dockerfile.arm b/python/Dockerfile.arm
index 3c74a101d0..e08487d17a 100644
--- a/python/Dockerfile.arm
+++ b/python/Dockerfile.arm
@@ -1,4 +1,4 @@
-FROM swiftnav/llvm-arm-stretch:2019.07.03
+FROM swiftnav/llvm-arm-stretch:2019.09.19
 
 ARG JOBS=8
 
diff --git a/python/Dockerfile.llvm_arm b/python/Dockerfile.llvm_arm
index d5594058bf..f80b162718 100644
--- a/python/Dockerfile.llvm_arm
+++ b/python/Dockerfile.llvm_arm
@@ -19,12 +19,12 @@ RUN \
                         libatlas-base-dev libsqlite3-dev tk-dev libgdbm-dev \
                         libc6-dev
 
-ENV LLVM_BRANCH=release_60
+ENV LLVM_BRANCH=release_70
 ENV LLVM_URL=https://github.com/llvm-mirror/llvm.git
 ENV CLANG_URL=https://github.com/llvm-mirror/clang.git
 
 RUN \
-     echo '>>> Building LLVM 6.0...' \
+     echo '>>> Building LLVM 7.0...' \
   && git clone --depth=1 --single-branch -b ${LLVM_BRANCH} ${LLVM_URL} /tmp/llvm \
   && git clone --depth=1 --single-branch -b ${LLVM_BRANCH} ${CLANG_URL} /tmp/llvm/tools/clang \
   && mkdir -p /tmp/llvm/build \