diff --git a/Project.toml b/Project.toml
index 6da043f..fbc1fc6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -16,10 +16,10 @@ UnicodePlots = "b8865327-cd53-5732-bb35-84acbb429228"
 [compat]
 FFTW = "1"
 GDAL = "1"
+GMT = "0.41"
 SeisIO = "1"
-UnicodePlots = "2"
+UnicodePlots = "2, 3"
 julia = "1"
-GMT = "0.41"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"