diff --git a/beacon_node/Cargo.toml b/beacon_node/Cargo.toml
index a090c1cc5..37d96a497 100644
--- a/beacon_node/Cargo.toml
+++ b/beacon_node/Cargo.toml
@@ -9,7 +9,7 @@ types = { path = "../eth2/types" }
 client = { path = "client" }
 version = { path = "version" }
 clap = "2.32.0"
-slog = "^2.2.3"
+slog = { version = "^2.2.3" , features = ["max_level_trace", "release_max_level_debug"] }
 slog-term = "^2.4.0"
 slog-async = "^2.3.0"
 ctrlc = { version = "3.1.1", features = ["termination"] }
diff --git a/beacon_node/network/Cargo.toml b/beacon_node/network/Cargo.toml
index c6411a020..cd2c2269a 100644
--- a/beacon_node/network/Cargo.toml
+++ b/beacon_node/network/Cargo.toml
@@ -13,7 +13,7 @@ beacon_chain =  { path = "../beacon_chain" }
 eth2-libp2p =  { path = "../eth2-libp2p" }
 version = { path = "../version" }
 types = { path = "../../eth2/types" }
-slog = "2.4.1"
+slog = { version = "^2.2.3" , features = ["max_level_trace", "release_max_level_debug"] }
 ssz = { path = "../../eth2/utils/ssz" }
 futures = "0.1.25"
 error-chain = "0.12.0"