diff --git a/Cargo.toml b/Cargo.toml
index 9ca2d0d..a4c93bd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,17 +32,17 @@ keywords = ["gamedev", "cgmath", "collision"]
 name = "collision"
 
 [dependencies]
-rand = "0.6"
-approx = "0.3" # Only for the macros; for all other instances use the re-exported cgmath ones.
-cgmath = "0.17"
+rand = "0.8"
+approx = "0.4" # Only for the macros; for all other instances use the re-exported cgmath ones.
+cgmath = "0.18"
 serde = { version = "1.0", optional = true, features = ["derive"] }
 bit-set = "0.5"
-smallvec = "0.6.1"
+smallvec = "1.6"
+num = { version = "0.3", optional = true, features = ["serde"] }
 
-[target.'cfg(feature="serde")'.dependencies]
-cgmath = { version = "0.17", features = ["serde"] }
-num = { version = "0.2", features = ["serde"] }
+[features]
+use-serde = ["serde", "cgmath/serde", "num"]
 
 [dev-dependencies]
-genmesh = "0.5"
+genmesh = "0.6"
 
diff --git a/src/dbvt/mod.rs b/src/dbvt/mod.rs
index f9c8167..c42dbcd 100644
--- a/src/dbvt/mod.rs
+++ b/src/dbvt/mod.rs
@@ -900,7 +900,7 @@ where
 
         // Only do rotations occasionally, as they are fairly expensive, and shouldn't be overused.
         // For most scenarios, the majority of shapes will not have moved, so this is fine.
-        if rand::thread_rng().gen_range(0, 100) < PERFORM_ROTATION_PERCENTAGE {
+        if rand::thread_rng().gen_range(0..100) < PERFORM_ROTATION_PERCENTAGE {
             self.rotate(node_index);
         }
     }