diff --git a/generate.sh b/generate.sh
index 3c2f44d..a676911 100644
--- a/generate.sh
+++ b/generate.sh
@@ -17,7 +17,7 @@ generate_docker() {
            --miniconda \
              conda_install="python=3.8 pytest jupyter jupyterlab jupyter_contrib_nbextensions
                             traits pandas matplotlib scikit-learn scikit-image seaborn nbformat nb_conda" \
-             pip_install="https://github.com/nipy/nipype/tarball/master
+             pip_install="git+https://github.com/nipy/nipype.git@rel/1.8.4
                           pybids==0.13.1
                           nilearn datalad[full] nipy duecredit nbval niflow-nipype1-workflows" \
              create_env="neuro" \
@@ -54,9 +54,9 @@ generate_singularity() {
            --user=neuro \
            --workdir /home/neuro \
            --miniconda \
-             conda_install="python=3.7 pytest jupyter jupyterlab jupyter_contrib_nbextensions
+             conda_install="python=3.8 pytest jupyter jupyterlab jupyter_contrib_nbextensions
                             traits pandas matplotlib scikit-learn scikit-image seaborn nbformat nb_conda" \
-             pip_install="https://github.com/nipy/nipype/tarball/master
+             pip_install="git+https://github.com/nipy/nipype.git@rel/1.8.4
                           pybids==0.13.1
                           nilearn datalad[full] nipy duecredit nbval niflow-nipype1-workflows" \
              create_env="neuro" \