diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4ea7a442..ebb11f5a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,6 +44,7 @@ jobs:
           echo "ENABLE_VERIFIC := 1" >> Makefile.conf
           echo "ENABLE_VERIFIC_EDIF := 1" >> Makefile.conf
           echo "ENABLE_VERIFIC_LIBERTY := 1" >> Makefile.conf
+          echo "ENABLE_VERIFIC_YOSYSHQ_EXTENSIONS := 1" >> Makefile.conf
           echo "ENABLE_CCACHE := 1" >> Makefile.conf
           make -j${{ env.procs }}
           make install DESTDIR=${GITHUB_WORKSPACE}/.local PREFIX=