diff --git a/Cargo.lock b/Cargo.lock
index 1e23d65..52d217e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -437,16 +437,6 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
-[[package]]
-name = "is_prime"
-version = "2.0.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4db9b8aa828653de8d06c4aabc6428eb4676563905f67fa61679ed4d6dbc808f"
-dependencies = [
- "num-bigint 0.4.6",
- "num-traits",
-]
-
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -619,7 +609,6 @@ version = "0.0.0"
 dependencies = [
  "codspeed-criterion-compat",
  "glass_pumpkin",
- "is_prime",
  "num-bigint 0.4.6",
  "num-prime",
  "num-primes",
diff --git a/bench/Cargo.toml b/bench/Cargo.toml
index 4e3df5c..6adcb14 100644
--- a/bench/Cargo.toml
+++ b/bench/Cargo.toml
@@ -10,16 +10,17 @@ name = "bench"
 harness = false
 
 [dependencies]
+num-primes = { version = "0.3.0", optional = true }
+
+[dev-dependencies]
+criterion = { version = "4.4.1", package = "codspeed-criterion-compat" }
+glass_pumpkin = "1.2.0"
 num-bigint = { version = "0.4", features = ["rand"] }
 num-prime = { path = "..", features = ["big-int"] }
-criterion = { version = "4.4.1", package = "codspeed-criterion-compat" }
+primal-check = "0.3.1"
 rand = "0.8"
 rand_chacha = "0.10"
 rand_core = "0.10"
-num-primes = { version = "0.3.0", optional = true }
-primal-check = "0.3.1"
-is_prime = "2.0.7"
-glass_pumpkin = "1.2.0"
 
 [features]
 default = []