diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index dae8b1ddc0ea2273a38e25e2bdf38f41446f1988..37bae68855f0a7a490e6c5616d1cbdcdaa1b45c1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -27,7 +27,7 @@ gwinc/base:
       cat <<EOF > Dockerfile
       FROM igwn/base:buster
       RUN apt-get update -qq
-      RUN apt-get -y install --no-install-recommends git python3 python3-gitlab python3-setuptools-scm python3-yaml python3-scipy python3-matplotlib python3-pypdf2 python3-h5py python3-inspiral-range
+      RUN apt-get -y install --no-install-recommends git python3 python3-gitlab python3-setuptools-scm python3-yaml python3-scipy python3-matplotlib python3-pypdf2 python3-h5py python3-inspiral-range python3-lalsimulation
       EOF
     - docker build -t $IMAGE_TAG .
     - docker push $IMAGE_TAG