diff --git a/Cargo.toml b/Cargo.toml
index 1975ff69..5f80353f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,8 @@ cortex-m-semihosting = "0.3"
 
 [dev-dependencies.rand]
 default-features = false
-version = "0.5.5"
+features = ["small_rng"]
+version = "0.7"
 
 [target.'cfg(not(target_os = "none"))'.dev-dependencies]
 compiletest_rs = "0.3.25"
diff --git a/examples/rand.rs b/examples/rand.rs
index ec3afaae..358868b4 100644
--- a/examples/rand.rs
+++ b/examples/rand.rs
@@ -16,8 +16,8 @@ use rand::SeedableRng;
 // the program entry point
 #[entry]
 fn main() -> ! {
-    let seed: [u8; 32] = [0; 32];
-    let mut rng = rand::ChaChaRng::from_seed(seed);
+    let seed: [u8; 16] = [0; 16];
+    let mut rng = rand::rngs::SmallRng::from_seed(seed);
     let _ = rng.gen::<u32>();
 
     loop {}
diff --git a/macros/Cargo.toml b/macros/Cargo.toml
index c53ec891..4e2b56df 100644
--- a/macros/Cargo.toml
+++ b/macros/Cargo.toml
@@ -21,8 +21,9 @@ features = ["extra-traits", "full"]
 version = "1.0"
 
 [dependencies.rand]
-version = "0.5.5"
 default-features = false
+features = ["small_rng"]
+version = "0.7"
 
 [dev-dependencies]
 cortex-m-rt = { path = "..", version = "0.6" }