diff --git a/idsig/Cargo.toml b/idsig/Cargo.toml
index 10790a7..91b2842 100644
--- a/idsig/Cargo.toml
+++ b/idsig/Cargo.toml
@@ -5,4 +5,7 @@
 edition = "2018"
 
 [dependencies]
+anyhow = "1.0"
 ring = "0.16"
+num-derive = "0.3"
+num-traits = "0.2"