diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9be5670..6eb538a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -314,7 +314,7 @@ jobs:
           SOURCE_DATE_EPOCH: ${{needs.prepare.outputs.COMMIT_DATE_UNIX}}
           BUILD_DATE: ${{needs.prepare.outputs.BUILD_DATE}}
         run: |
-          sudo apt-get update && sudo apt-get install autoconf-archive ninja-build
+          sudo apt-get update && sudo apt-get install libltdl-dev swig autoconf-archive ninja-build
           ./build-cross-tools.sh /opt/llvm-mingw $(pwd)/install/llvm-mingw ${{matrix.arch}} --with-python
           .github/workflows/store-version.sh install/llvm-mingw/versions.txt
           cd install