diff --git a/.circleci/config.yml b/.circleci/config.yml
index cbd41e71..3e6ed3c7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -22,7 +22,7 @@ version: 2
 jobs:
   stable:
     docker:
-      - image: rust:1.31.0-slim
+      - image: rust:1.32.0-slim
     environment:
       RUSTFLAGS: -D warnings
     steps:
diff --git a/phf_generator/Cargo.toml b/phf_generator/Cargo.toml
index b3b41bc0..c33d2e70 100644
--- a/phf_generator/Cargo.toml
+++ b/phf_generator/Cargo.toml
@@ -8,5 +8,5 @@ repository = "https://github.com/sfackler/rust-phf"
 edition = "2018"
 
 [dependencies]
-rand = "0.6"
+rand = { version = "0.7", features = ["small_rng"] }
 phf_shared = { version = "0.7.24", path = "../phf_shared" }