diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..89782dd
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,10 @@
+use std::process::Command;
+
+fn main() {
+    if let Ok(output) = Command::new("git").args(["rev-parse", "HEAD"]).output() {
+        if output.status.success() {
+            let hash = String::from_utf8_lossy(&output.stdout);
+            println!("cargo:rustc-env=GIT_COMMIT_HASH={}", hash.trim());
+        }
+    }
+}
diff --git a/src/support.rs b/src/support.rs
index aef26f3..bd41105 100644
--- a/src/support.rs
+++ b/src/support.rs
@@ -29,7 +29,7 @@ impl Support {
 
 static MAX_LOG_LINES: usize = 500;
 static SUPPORT_EMAIL: &str = "support@damus.io";
-static EMAIL_TEMPLATE: &str = "Describe the bug you have encountered:\n<-- your statement here -->\n\n===== Paste your log below =====\n\n";
+static EMAIL_TEMPLATE: &str = concat!("Commit hash: ", env!("GIT_COMMIT_HASH"), "\n\nDescribe the bug you have encountered:\n<-- your statement here -->\n\n===== Paste your log below =====\n\n");
 
 impl Support {
     pub fn refresh(&mut self) {
diff --git a/src/ui/support.rs b/src/ui/support.rs
index c9299ed..65f5585 100644
--- a/src/ui/support.rs
+++ b/src/ui/support.rs
@@ -75,6 +75,7 @@ impl<'a> SupportView<'a> {
                         .color(egui::Color32::RED),
                 );
             }
+            ui.label(format!("Commit hash: {}", env!("GIT_COMMIT_HASH")));
         });
     }
 }