diff --git a/aquatic_udp_load_test/src/config.rs b/aquatic_udp_load_test/src/config.rs
index b2566df..963c80f 100644
--- a/aquatic_udp_load_test/src/config.rs
+++ b/aquatic_udp_load_test/src/config.rs
@@ -101,10 +101,10 @@ pub struct RequestConfig {
     /// Probability that a generated request is a scrape request, as part
     /// of sum of the various weight arguments.
     pub weight_scrape: usize,
-    /// Pareto shape
-    ///
-    /// Fake peers choose torrents according to Pareto distribution.
-    pub torrent_selection_pareto_shape: f64,
+    /// Peers choose torrents according to this Gamma distribution shape
+    pub torrent_gamma_shape: f64,
+    /// Peers choose torrents according to this Gamma distribution scale
+    pub torrent_gamma_scale: f64,
     /// Probability that a generated peer is a seeder
     pub peer_seeder_probability: f64,
     /// Probability that an additional connect request will be sent for each
@@ -116,12 +116,13 @@ impl Default for RequestConfig {
     fn default() -> Self {
         Self {
             number_of_torrents: 10_000,
-            peer_seeder_probability: 0.25,
             scrape_max_torrents: 50,
             weight_connect: 0,
-            weight_announce: 5,
+            weight_announce: 100,
             weight_scrape: 1,
-            torrent_selection_pareto_shape: 2.0,
+            torrent_gamma_shape: 0.2,
+            torrent_gamma_scale: 100.0,
+            peer_seeder_probability: 0.25,
             additional_request_probability: 0.5,
         }
     }
diff --git a/aquatic_udp_load_test/src/main.rs b/aquatic_udp_load_test/src/main.rs
index 7066b5f..30d70d5 100644
--- a/aquatic_udp_load_test/src/main.rs
+++ b/aquatic_udp_load_test/src/main.rs
@@ -6,7 +6,7 @@ use std::time::{Duration, Instant};
 
 #[cfg(feature = "cpu-pinning")]
 use aquatic_common::cpu_pinning::{pin_current_if_configured_to, WorkerIndex};
-use rand_distr::Pareto;
+use rand_distr::Gamma;
 
 mod common;
 mod config;
@@ -58,7 +58,11 @@ fn run(config: Config) -> ::anyhow::Result<()> {
         statistics: Arc::new(Statistics::default()),
     };
 
-    let pareto = Pareto::new(1.0, config.requests.torrent_selection_pareto_shape).unwrap();
+    let pareto = Gamma::new(
+        config.requests.torrent_gamma_shape,
+        config.requests.torrent_gamma_scale,
+    )
+    .unwrap();
 
     // Start workers
 
diff --git a/aquatic_udp_load_test/src/utils.rs b/aquatic_udp_load_test/src/utils.rs
index bae1391..d436233 100644
--- a/aquatic_udp_load_test/src/utils.rs
+++ b/aquatic_udp_load_test/src/utils.rs
@@ -1,9 +1,9 @@
 use rand::prelude::*;
-use rand_distr::Pareto;
+use rand_distr::Gamma;
 
 use aquatic_udp_protocol::*;
 
-pub fn pareto_usize(rng: &mut impl Rng, pareto: Pareto<f64>, max: usize) -> usize {
+pub fn pareto_usize(rng: &mut impl Rng, pareto: Gamma<f64>, max: usize) -> usize {
     let p: f64 = rng.sample(pareto);
     let p = (p.min(101.0f64) - 1.0) / 100.0;
 
diff --git a/aquatic_udp_load_test/src/worker/mod.rs b/aquatic_udp_load_test/src/worker/mod.rs
index 40b0a62..63c2fd4 100644
--- a/aquatic_udp_load_test/src/worker/mod.rs
+++ b/aquatic_udp_load_test/src/worker/mod.rs
@@ -8,7 +8,7 @@ use std::time::Duration;
 use mio::{net::UdpSocket, Events, Interest, Poll, Token};
 use rand::Rng;
 use rand::{prelude::SmallRng, thread_rng, SeedableRng};
-use rand_distr::Pareto;
+use rand_distr::Gamma;
 use socket2::{Domain, Protocol, Socket, Type};
 
 use aquatic_udp_protocol::*;
@@ -21,7 +21,7 @@ const MAX_PACKET_SIZE: usize = 8192;
 
 pub fn run_worker_thread(
     state: LoadTestState,
-    pareto: Pareto<f64>,
+    pareto: Gamma<f64>,
     config: &Config,
     addr: SocketAddr,
 ) {
diff --git a/aquatic_udp_load_test/src/worker/request_gen.rs b/aquatic_udp_load_test/src/worker/request_gen.rs
index ce99889..665ed32 100644
--- a/aquatic_udp_load_test/src/worker/request_gen.rs
+++ b/aquatic_udp_load_test/src/worker/request_gen.rs
@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 use rand::distributions::WeightedIndex;
 use rand::prelude::*;
-use rand_distr::Pareto;
+use rand_distr::Gamma;
 
 use aquatic_udp_protocol::*;
 
@@ -12,7 +12,7 @@ use crate::utils::*;
 
 pub fn process_response(
     rng: &mut impl Rng,
-    pareto: Pareto<f64>,
+    pareto: Gamma<f64>,
     info_hashes: &Arc<Vec<InfoHash>>,
     config: &Config,
     torrent_peers: &mut TorrentPeerMap,
@@ -190,7 +190,7 @@ fn create_scrape_request(
 fn create_torrent_peer(
     config: &Config,
     rng: &mut impl Rng,
-    pareto: Pareto<f64>,
+    pareto: Gamma<f64>,
     info_hashes: &Arc<Vec<InfoHash>>,
     connection_id: ConnectionId,
 ) -> TorrentPeer {
@@ -213,6 +213,6 @@ fn create_torrent_peer(
     }
 }
 
-fn select_info_hash_index(config: &Config, rng: &mut impl Rng, pareto: Pareto<f64>) -> usize {
+fn select_info_hash_index(config: &Config, rng: &mut impl Rng, pareto: Gamma<f64>) -> usize {
     pareto_usize(rng, pareto, config.requests.number_of_torrents - 1)
 }