diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 3e3bb65d1bb8..07070a6e775c 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -287,7 +287,7 @@ let
     pbdMPI = [ pkgs.openmpi ];
     pbdNCDF4 = [ pkgs.netcdf ];
     pbdPROF = [ pkgs.openmpi ];
-    PKI = [ pkgs.openssl ];
+    PKI = [ pkgs.openssl.dev ];
     png = [ pkgs.libpng.dev ];
     PopGenome = [ pkgs.zlib ];
     proj4 = [ pkgs.proj ];