diff --git a/.github/workflows/py3_casacore_master.docker b/.github/workflows/py3_casacore_master.docker
index bfa98ee..ff83476 100644
--- a/.github/workflows/py3_casacore_master.docker
+++ b/.github/workflows/py3_casacore_master.docker
@@ -5,7 +5,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get install -y \
     casacore-dev \
     libboost-python-dev \
     libcfitsio-dev \
-    pkg-config \
+    liblapack-dev \
     python3-dev \
     python3-venv \
     wcslib-dev