diff --git a/Project.toml b/Project.toml
index a8a53c5..459ed0f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,6 +19,7 @@ WCS = "15f3aee2-9e10-537f-b834-a6fb8bdb944d"
 DSP = "0.7"
 FFTW = "1"
 FITSIO = "0.16"
+Libsharp = "0.2"
 Healpix = "3"
 FastTransforms = "0.13"
 Unitful = "1"