diff --git a/Cargo.toml b/Cargo.toml
index 56119a5..8b62f24 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,7 +29,7 @@ core_affinity = { version = "0.8.1", optional = true }
 # required with alternate outcome channel implementations that can be enabled with features
 # NOTE: these version requirements could be relaxed as we don't actually depend on the
 # functionality of these crates internally (other than in tests)
-flume = { version = "0.11.1", optional = true }
+flume = { version = "0.12.0", optional = true }
 loole = { version = "0.4.0", optional = true }
 
 [dev-dependencies]