diff --git a/docker/Dockerfile b/docker/Dockerfile
index c60c52580cb3..3c7b0497c6ab 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -25,7 +25,8 @@ RUN apt-get update && \
   apt-get install -y \
     libopenblas-dev \
     antlr4 \
-    cython && \
+    cython \
+    llvm-dev && \
   rm -rf /var/lib/apt/lists/* && \
   pip3 install twine pyyaml && \
   pip3 install --upgrade keyrings.alt
diff --git a/sima-regres.cmake b/sima-regres.cmake
index eacded870e8a..ad5ccab1db2b 100644
--- a/sima-regres.cmake
+++ b/sima-regres.cmake
@@ -118,7 +118,7 @@ set(USE_MICRO_STANDALONE_RUNTIME OFF)
 # - ON: enable llvm with cmake's find search
 # - OFF: disable llvm
 # - /path/to/llvm-config: enable specific LLVM when multiple llvm-dev is available.
-set(USE_LLVM OFF)
+set(USE_LLVM ON)
 
 #---------------------------------------------
 # Contrib libraries