diff --git a/core/Cargo.toml b/core/Cargo.toml
index 44903ca3..29ead2fe 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -10,7 +10,7 @@ categories = ["concurrency"]
 edition = "2018"
 
 [dependencies]
-cfg-if = "0.1.10"
+cfg-if = "1.0.0"
 smallvec = "1.4.0"
 petgraph = { version = "0.5.1", optional = true }
 thread-id = { version = "3.3.0", optional = true }