diff --git a/packages/r-rgsl/package.py b/packages/r-rgsl/package.py
index d7796805ea3fc29606fb33805b450d4d9efb31d7..f51d0dd52232a7e87a92705be1ade9c4b68afa5d 100644
--- a/packages/r-rgsl/package.py
+++ b/packages/r-rgsl/package.py
@@ -21,3 +21,4 @@ class RRgsl(RPackage):
     # GNU Scientific Library: https://www.gnu.org/software/gsl
     # spack: https://spack.readthedocs.io/en/latest/package_list.html#gsl
     depends_on("gsl")
+    depends_on("pkgconfig")