diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index cd9c102e7..0ac6e971c 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -85,6 +85,7 @@ jobs:
           remotes::install_cran("rcmdcheck")
           install.packages("Matrix", type = "source")
           install.packages("TMB", type = "source")
+          install.packages("units", type = "source")
         shell: Rscript {0}
 
       - name: Install dependencies Windows