diff --git a/Cargo.lock b/Cargo.lock
index eaa53ada..ad6d603b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -224,17 +224,6 @@ dependencies = [
  "cc",
 ]
 
-[[package]]
-name = "average"
-version = "0.17.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04c5a79a6c36c527e1c31bc0effa93af02e7278b7369b83e0674255290b6c1b0"
-dependencies = [
- "easy-cast",
- "float-ord",
- "num-traits",
-]
-
 [[package]]
 name = "aws-lc-rs"
 version = "1.16.3"
@@ -889,15 +878,6 @@ version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0881ea181b1df73ff77ffaaf9c7544ecc11e82fba9b5f27b262a3c73a332555"
 
-[[package]]
-name = "easy-cast"
-version = "0.5.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23f40539c229fc2e4674bdecdf24bfcc2cb83631ca911c78a035fa9f2381c32b"
-dependencies = [
- "libm",
-]
-
 [[package]]
 name = "educe"
 version = "0.6.0"
@@ -1018,12 +998,6 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
 
-[[package]]
-name = "float-ord"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ce81f49ae8a0482e4c55ea62ebbd7e5a686af544c00b9d090bba3ff9be97b3d"
-
 [[package]]
 name = "flume"
 version = "0.12.0"
@@ -1567,12 +1541,6 @@ dependencies = [
  "windows-link 0.2.1",
 ]
 
-[[package]]
-name = "libm"
-version = "0.2.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
-
 [[package]]
 name = "lightway-app-utils"
 version = "0.1.0"
@@ -1695,7 +1663,6 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "async-trait",
- "average",
  "bytes",
  "bytesize",
  "clap",
@@ -2073,7 +2040,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
- "libm",
 ]
 
 [[package]]
diff --git a/lightway-server/Cargo.toml b/lightway-server/Cargo.toml
index 89627cc4..6bfafa5f 100644
--- a/lightway-server/Cargo.toml
+++ b/lightway-server/Cargo.toml
@@ -19,7 +19,6 @@ workspace = true
 [dependencies]
 anyhow.workspace = true
 async-trait.workspace = true
-average = "0.17.0"
 bytes.workspace = true
 bytesize.workspace = true
 clap.workspace = true
diff --git a/lightway-server/src/ip_manager/ip_pool.rs b/lightway-server/src/ip_manager/ip_pool.rs
index 2c8e673f..b8269a2c 100644
--- a/lightway-server/src/ip_manager/ip_pool.rs
+++ b/lightway-server/src/ip_manager/ip_pool.rs
@@ -368,8 +368,6 @@ mod tests {
 
     #[test]
     fn test_shuffle() {
-        use average::Mean;
-
         let mut pool = get_ip_pool();
         pool.shuffle_ips();
 
@@ -386,15 +384,19 @@ mod tests {
         // chances of this coming out as less than 512 in practice are
         // miniscule.
         let mut previous = pool.allocate_ip().unwrap().to_bits();
-        let m: Mean = std::iter::from_fn(|| {
+        let (count, total_differences) = std::iter::from_fn(|| {
             let ip = pool.allocate_ip()?.to_bits();
 
             let delta = ip.abs_diff(previous);
             previous = ip;
             Some(delta as f64)
         })
-        .collect();
-        assert_gt!(m.mean(), 512.0);
+        .fold((0, 0.0f64), |(mut count, mut total_differences), v| {
+            count += 1;
+            total_differences += v;
+            (count, total_differences)
+        });
+        assert_gt!(total_differences / count as f64, 512.0);
     }
 }
 
diff --git a/lightway-server/src/main.rs b/lightway-server/src/main.rs
index 4b403d40..0f624718 100644
--- a/lightway-server/src/main.rs
+++ b/lightway-server/src/main.rs
@@ -50,24 +50,25 @@ async fn metrics_debug() {
                 metrics_util::debugging::DebugValue::Gauge(value) => {
                     trace!("metric: {} {labels:?} = Guage({value:?})", name.as_str())
                 }
-                metrics_util::debugging::DebugValue::Histogram(values) => {
-                    // TODO: https://docs.rs/average/latest/average/macro.concatenate.html for min/max and avg?
-
-                    use average::{Estimate, Max, Mean, Min, concatenate};
-
-                    concatenate!(Stats, [Min, min], [Mean, mean], [Max, max]);
-                    let len = values.len();
-                    let s: Stats = values.into_iter().map(|f| f.into_inner()).collect();
-
+                metrics_util::debugging::DebugValue::Histogram(values) if !values.is_empty() => {
+                    let (sum, maximum, minimum) = values.iter().fold(
+                        (0.0f64, f64::NEG_INFINITY, f64::INFINITY),
+                        |(mut sum, maximum, minimum), v| {
+                            let v = v.into_inner();
+                            sum += v;
+                            (sum, maximum.max(v), minimum.min(v))
+                        },
+                    );
                     trace!(
                         "metric: {} {labels:?} = Histogram({} samples min/avg/max {:.2}/{:.2}/{:.2})",
                         name.as_str(),
-                        len,
-                        s.min(),
-                        s.mean(),
-                        s.max(),
+                        values.len(),
+                        minimum,
+                        sum / values.len() as f64,
+                        maximum,
                     )
                 }
+                _ => (),
             };
         }
     }