diff --git a/Cargo.toml b/Cargo.toml
index 8520b3b36..0b6e3e218 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,8 +31,8 @@ bytes = "0.4.11"
 slog = "2.2"
 quick-error = "1.2.2"
 raft-proto = { path = "proto" }
-rand = "0.6.4"
-hashbrown = "0.3"
+rand = "0.7.0"
+hashbrown = "0.5"
 fail = { version = "0.2", optional = true }
 getset = "0.0.7"
 slog-stdlog = "3.0.2"
diff --git a/harness/Cargo.toml b/harness/Cargo.toml
index 48cddbc80..8a811da6d 100644
--- a/harness/Cargo.toml
+++ b/harness/Cargo.toml
@@ -14,7 +14,7 @@ edition = "2018"
 # Make sure to synchronize updates with Raft.
 [dependencies]
 raft = { path = ".." }
-rand = "0.6.4"
+rand = "0.7.0"
 slog = "2.2"
 slog-term = "2.4.0"
 slog-envlogger = "2.1.0"