diff --git a/src/hyperfine/benchmark.rs b/src/hyperfine/benchmark.rs
index 5291e35..51968c2 100644
--- a/src/hyperfine/benchmark.rs
+++ b/src/hyperfine/benchmark.rs
@@ -412,5 +412,6 @@ pub fn run_benchmark(
         t_min,
         t_max,
         times_real,
+        cmd.get_parameter().map(|p| p.1),
     ))
 }
diff --git a/src/hyperfine/export/markdown.rs b/src/hyperfine/export/markdown.rs
index 25b12a6..930b10c 100644
--- a/src/hyperfine/export/markdown.rs
+++ b/src/hyperfine/export/markdown.rs
@@ -83,6 +83,7 @@ fn test_markdown_format_ms() {
         0.1023,              // min
         0.1080,              // max
         vec![0.1, 0.1, 0.1], // times
+        None,                // parameter
     ));
 
     timing_results.push(BenchmarkResult::new(
@@ -94,6 +95,7 @@ fn test_markdown_format_ms() {
         2.0020,              // min
         2.0080,              // max
         vec![2.0, 2.0, 2.0], // times
+        None,                // parameter
     ));
 
     let formatted = String::from_utf8(exporter.serialize(&timing_results, None).unwrap()).unwrap();
@@ -126,6 +128,7 @@ fn test_markdown_format_s() {
         2.0020,              // min
         2.0080,              // max
         vec![2.0, 2.0, 2.0], // times
+        None,                // parameter
     ));
 
     timing_results.push(BenchmarkResult::new(
@@ -137,6 +140,7 @@ fn test_markdown_format_s() {
         0.1023,              // min
         0.1080,              // max
         vec![0.1, 0.1, 0.1], // times
+        None,                // parameter
     ));
 
     let formatted = String::from_utf8(exporter.serialize(&timing_results, None).unwrap()).unwrap();
@@ -168,6 +172,7 @@ fn test_markdown_format_time_unit_s() {
         0.1023,              // min
         0.1080,              // max
         vec![0.1, 0.1, 0.1], // times
+        None,                // parameter
     ));
 
     timing_results.push(BenchmarkResult::new(
@@ -179,6 +184,7 @@ fn test_markdown_format_time_unit_s() {
         2.0020,              // min
         2.0080,              // max
         vec![2.0, 2.0, 2.0], // times
+        None,                // parameter
     ));
 
     let formatted = String::from_utf8(
@@ -216,6 +222,7 @@ fn test_markdown_format_time_unit_ms() {
         2.0020,              // min
         2.0080,              // max
         vec![2.0, 2.0, 2.0], // times
+        None,                // parameter
     ));
 
     timing_results.push(BenchmarkResult::new(
@@ -227,6 +234,7 @@ fn test_markdown_format_time_unit_ms() {
         0.1023,              // min
         0.1080,              // max
         vec![0.1, 0.1, 0.1], // times
+        None,                // parameter
     ));
 
     let formatted = String::from_utf8(
diff --git a/src/hyperfine/types.rs b/src/hyperfine/types.rs
index d07fd91..784af51 100644
--- a/src/hyperfine/types.rs
+++ b/src/hyperfine/types.rs
@@ -173,6 +173,10 @@ pub struct BenchmarkResult {
     /// All run time measurements
     #[serde(skip_serializing_if = "Option::is_none")]
     pub times: Option<Vec<Second>>,
+
+    /// Any parameter used
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub parameter: Option<i32>,
 }
 
 impl BenchmarkResult {
@@ -186,6 +190,7 @@ impl BenchmarkResult {
         min: Second,
         max: Second,
         times: Vec<Second>,
+        parameter: Option<i32>,
     ) -> Self {
         BenchmarkResult {
             command,
@@ -196,6 +201,7 @@ impl BenchmarkResult {
             min,
             max,
             times: Some(times),
+            parameter,
         }
     }
 }