diff --git a/juniper/Cargo.toml b/juniper/Cargo.toml
index 85b24cd6d..09651b852 100644
--- a/juniper/Cargo.toml
+++ b/juniper/Cargo.toml
@@ -73,7 +73,7 @@ uuid = { version = "1.3", default-features = false, optional = true }
 
 # Fixes for `minimal-versions` check.
 # TODO: Try remove on upgrade of `bigdecimal` crate.
-num-bigint = { version = "0.4.2", optional = true }
+num-bigint = { version = "0.5.1", optional = true }
 # TODO: Try remove on upgrade of `chrono-tz` crate.
 regex = { version = "1.6", features = ["std"], default-features = false, optional = true }
 # TODO: Try remove on upgrade of `bson` crate.