diff --git a/sentry-core/src/session.rs b/sentry-core/src/session.rs
index 00739872..7d0397ee 100644
--- a/sentry-core/src/session.rs
+++ b/sentry-core/src/session.rs
@@ -213,6 +213,7 @@ mod session_impl {
             let worker_shutdown = shutdown.clone();
             let worker = std::thread::Builder::new()
                 .name("sentry-session-flusher".into())
+                .stack_size(100 * 1024)
                 .spawn(move || {
                     let (lock, cvar) = worker_shutdown.as_ref();
                     let mut shutdown = lock.lock().unwrap();
diff --git a/sentry/src/transports/thread.rs b/sentry/src/transports/thread.rs
index 7f45990f..86a7c61f 100644
--- a/sentry/src/transports/thread.rs
+++ b/sentry/src/transports/thread.rs
@@ -29,6 +29,7 @@ impl TransportThread {
         let shutdown_worker = shutdown.clone();
         let handle = thread::Builder::new()
             .name("sentry-transport".into())
+            .stack_size(500 * 1024)
             .spawn(move || {
                 let mut rl = RateLimiter::new();
 
diff --git a/sentry/src/transports/tokio_thread.rs b/sentry/src/transports/tokio_thread.rs
index 9323e482..e8ef3868 100644
--- a/sentry/src/transports/tokio_thread.rs
+++ b/sentry/src/transports/tokio_thread.rs
@@ -31,6 +31,7 @@ impl TransportThread {
         let shutdown_worker = shutdown.clone();
         let handle = thread::Builder::new()
             .name("sentry-transport".into())
+            .stack_size(500 * 1024)
             .spawn(move || {
                 // create a runtime on the transport thread
                 let rt = tokio::runtime::Builder::new_current_thread()