diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index 6f1807b4138..64e889d7612 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -260,7 +260,7 @@ let
     fftwtools = [ pkgs.fftw ];
     Formula = [ pkgs.gmp ];
     geoCount = [ pkgs.gsl_1 ];
-    git2r = [ pkgs.zlib pkgs.openssl ];
+    git2r = [ pkgs.zlib.dev pkgs.openssl.dev ];
     GLAD = [ pkgs.gsl_1 ];
     glpkAPI = [ pkgs.gmp pkgs.glpk ];
     gmp = [ pkgs.gmp ];