diff --git a/src/config/parser.rs b/src/config/parser.rs
index 63329c5..dcde182 100644
--- a/src/config/parser.rs
+++ b/src/config/parser.rs
@@ -30,6 +30,8 @@ pub struct Config {
     pub logging: bool,
     /// It stores the option to whether enable or disable debug mode.
     pub debug: bool,
+    /// It toggles whether to use adaptive TCP windows
+    pub adaptive_window: bool,
     /// It stores all the engine names that were enabled by the user.
     pub upstream_search_engines: HashMap<String, bool>,
     /// It stores the time (secs) which controls the server request timeout.
@@ -68,6 +70,7 @@ impl Config {
 
         let debug: bool = globals.get::<_, bool>("debug")?;
         let logging: bool = globals.get::<_, bool>("logging")?;
+        let adaptive_window: bool = globals.get::<_, bool>("adaptive_window")?;
 
         if !logging_initialized {
             set_logging_level(debug, logging);
@@ -125,6 +128,7 @@ impl Config {
             },
             logging,
             debug,
+            adaptive_window,
             upstream_search_engines: globals
                 .get::<_, HashMap<String, bool>>("upstream_search_engines")?,
             request_timeout: globals.get::<_, u8>("request_timeout")?,
diff --git a/src/results/aggregator.rs b/src/results/aggregator.rs
index e7fc090..2e64817 100644
--- a/src/results/aggregator.rs
+++ b/src/results/aggregator.rs
@@ -71,6 +71,7 @@ pub async fn aggregate(
     upstream_search_engines: &[EngineHandler],
     request_timeout: u8,
     safe_search: u8,
+    adaptive_window: bool,
 ) -> Result<SearchResults, Box<dyn std::error::Error>> {
     let client = CLIENT.get_or_init(|| {
         ClientBuilder::new()
@@ -78,6 +79,7 @@ pub async fn aggregate(
             .https_only(true)
             .gzip(true)
             .brotli(true)
+            .http2_adaptive_window(adaptive_window)
             .build()
             .unwrap()
     });
diff --git a/src/server/routes/search.rs b/src/server/routes/search.rs
index 16cfa28..b26e5ac 100644
--- a/src/server/routes/search.rs
+++ b/src/server/routes/search.rs
@@ -218,6 +218,7 @@ async fn results(
                             .collect::<Vec<EngineHandler>>(),
                         config.request_timeout,
                         safe_search_level,
+                        config.adaptive_window,
                     )
                     .await?
                 }
diff --git a/websurfx/config.lua b/websurfx/config.lua
index ce2d609..32b20da 100644
--- a/websurfx/config.lua
+++ b/websurfx/config.lua
@@ -14,6 +14,8 @@ rate_limiter = {
 	number_of_requests = 20, -- The number of request that are allowed within a provided time limit.
 	time_limit = 3, -- The time limit in which the quantity of requests that should be accepted.
 }
+-- Set whether the server will use an adaptive/dynamic HTTPS window size
+https_adaptive_window_size = false
 
 -- ### Search ###
 -- Filter results based on different levels. The levels provided are: