diff --git a/doc/configuration.txt b/doc/configuration.txt
index c17e5e3da..e1d55133b 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -1172,6 +1172,10 @@ The following keywords are supported in the "global" section :
    - tune.disable-fast-forward
    - tune.fail-alloc
    - tune.fd.edge-triggered
+   - tune.h2.be.initial-window-size
+   - tune.h2.be.max-concurrent-streams
+   - tune.h2.fe.initial-window-size
+   - tune.h2.fe.max-concurrent-streams
    - tune.h2.header-table-size
    - tune.h2.initial-window-size
    - tune.h2.max-concurrent-streams