diff --git a/.github/workflows/emu-build-all-linux.yml b/.github/workflows/emu-build-all-linux.yml
index 8238884e..e7bde871 100644
--- a/.github/workflows/emu-build-all-linux.yml
+++ b/.github/workflows/emu-build-all-linux.yml
@@ -100,6 +100,7 @@ jobs:
           # sudo apt install -y clang
           sudo apt install -y libglx-dev # needed for overlay build (header files such as GL/glx.h)
           sudo apt install -y libgl-dev # needed for overlay build (header files such as GL/gl.h)
+          sudo apt install -y libx11-dev:i386 # needed for overlay build
           # sudo apt install -y binutils # (optional) contains the tool 'readelf' mainly, and other usefull binary stuff
 
       # build target
diff --git a/.github/workflows/emu-deps-linux.yml b/.github/workflows/emu-deps-linux.yml
index 4cc98287..c36ce396 100644
--- a/.github/workflows/emu-deps-linux.yml
+++ b/.github/workflows/emu-deps-linux.yml
@@ -76,6 +76,7 @@ jobs:
           # sudo apt install -y clang
           sudo apt install -y libglx-dev # needed for overlay build (header files such as GL/glx.h)
           sudo apt install -y libgl-dev # needed for overlay build (header files such as GL/gl.h)
+          sudo apt install -y libx11-dev:i386 # needed for overlay build
           # sudo apt install -y binutils # (optional) contains the tool 'readelf' mainly, and other usefull binary stuff
 
       - name: "Build deps"