diff --git a/Dockerfile b/Dockerfile
index 20674f6..763de49 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,10 @@ ARG BUILD_BASE_VERSION=0.5-r3
 RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
     apk add --update build-base=${BUILD_BASE_VERSION}
 
+ARG CLANG21_DEV_VERSION=21.1.2-r2
+RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
+    apk add --update clang21-dev=${CLANG21_DEV_VERSION}
+
 ARG CLANG21_STATIC_VERSION=21.1.2-r2
 RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
     apk add --update clang21-static=${CLANG21_STATIC_VERSION}
@@ -13,6 +17,14 @@ ARG CMAKE_VERSION=4.1.3-r0
 RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
     apk add --update cmake=${CMAKE_VERSION}
 
+ARG LLVM21_DEV_VERSION=21.1.2-r2
+RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
+    apk add --update llvm21-dev=${LLVM21_DEV_VERSION}
+
+ARG LLVM21_STATIC_VERSION=21.1.2-r2
+RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
+    apk add --update llvm21-static=${LLVM21_STATIC_VERSION}
+
 ARG PROTOC_VERSION=31.1-r1
 RUN --mount=type=cache,sharing=locked,target=/var/cache/apk \
     apk add --update protoc=${PROTOC_VERSION}