diff --git a/course_files/_bookdown.yml b/course_files/_bookdown.yml
index 3d49114a987cfe060648084a8c5dc72ecd324282..745f81315c2265c7db7928b97390192a4fc7c1d1 100644
--- a/course_files/_bookdown.yml
+++ b/course_files/_bookdown.yml
@@ -2,5 +2,5 @@ book_filename: "scRNA-seq-course"
 chapter_name: ""
 output_dir: ../public
 new_session: yes
-rmd_files: ["index.Rmd", "intro.Rmd", "exp-methods.Rmd", "umis.Rmd", "intro-to-R.Rmd", "intro-to-bioconductor.Rmd", "ggplot2-pheatmap-PCA.Rmd", "datasets.Rmd", "processing-bcls.Rmd", "process-raw-QC.Rmd",  "process-raw-align.Rmd", "cell-calling.Rmd", "exprs-qc.Rmd", "exprs-qc-reads.Rmd", "data-viz.Rmd", "data-viz-reads.Rmd", "exprs-norm.Rmd", "exprs-norm-reads.Rmd", "confounders.Rmd", "confounders-reads.Rmd", "remove-conf.Rmd", "remove-conf-reads.Rmd", "feature-selection.Rmd", "handling-sparsity.Rmd", "latent-spaces.Rmd", "clust-intro.Rmd", "clustering.Rmd", "pseudotime.Rmd", "de-intro.Rmd", "de-real.Rmd", "imputation.Rmd", "projection.Rmd", "search.Rmd", "data-integration.Rmd", "seurat.Rmd", "ideal-scrnaseq-pipeline.Rmd", "advanced.Rmd", "tools.Rmd", "references.Rmd"]
+rmd_files: ["index.Rmd", "intro.Rmd", "exp-methods.Rmd", "umis.Rmd", "intro-to-R.Rmd", "intro-to-bioconductor.Rmd", "ggplot2-pheatmap-PCA.Rmd", "datasets.Rmd", "processing-bcls.Rmd", "process-raw-QC.Rmd",  "process-raw-align.Rmd", "cell-calling.Rmd", "exprs-qc.Rmd", "exprs-qc-reads.Rmd", "data-viz.Rmd", "data-viz-reads.Rmd", "exprs-norm.Rmd", "exprs-norm-reads.Rmd", "confounders.Rmd", "confounders-reads.Rmd", "remove-conf.Rmd", "remove-conf-reads.Rmd", "feature-selection.Rmd", "handling-sparsity.Rmd", "latent-spaces.Rmd", "clust-intro.Rmd", "clustering.Rmd", "pseudotime.Rmd", "de-intro.Rmd", "de-real.Rmd", "imputation.Rmd", "projection.Rmd", "data-integration.Rmd", "seurat.Rmd", "ideal-scrnaseq-pipeline.Rmd", "advanced.Rmd", "tools.Rmd", "references.Rmd"]