diff --git a/lib/entry/libimagentrylink/Cargo.toml b/lib/entry/libimagentrylink/Cargo.toml
index fa9b63eb..031bdf6b 100644
--- a/lib/entry/libimagentrylink/Cargo.toml
+++ b/lib/entry/libimagentrylink/Cargo.toml
@@ -25,7 +25,7 @@ log = "0.4.6"
 toml = "0.5.1"
 url = "2"
 sha-1 = "0.8.1"
-hex = "0.3.2"
+hex = "0.4"
 is-match = "0.1.0"
 failure        = "0.1.5"
 failure_derive = "0.1.5"
diff --git a/lib/entry/libimagentryurl/Cargo.toml b/lib/entry/libimagentryurl/Cargo.toml
index c3e09b9c..2c17d7f8 100644
--- a/lib/entry/libimagentryurl/Cargo.toml
+++ b/lib/entry/libimagentryurl/Cargo.toml
@@ -25,7 +25,7 @@ log = "0.4.6"
 toml = "0.5.1"
 url = "2"
 sha-1 = "0.8.1"
-hex = "0.3.2"
+hex = "0.4"
 is-match = "0.1.0"
 failure        = "0.1.5"
 failure_derive = "0.1.5"