diff --git a/sf-writer/sf_h5_writer.cpp b/sf-writer/sf_h5_writer.cpp
index 933c5be..0c6ee7c 100644
--- a/sf-writer/sf_h5_writer.cpp
+++ b/sf-writer/sf_h5_writer.cpp
@@ -183,6 +183,8 @@ int main (int argc, char *argv[])
 
         // TODO: Write to H5
 
+        ring_buffer.release(metadata->buffer_slot_index);
+
         i_write++;
 
         auto end_time = chrono::steady_clock::now();