diff --git a/src/external/c-tap-harness-files b/src/external/c-tap-harness-files
index ab14e40ab0..8a2836d9d5 100644
--- a/src/external/c-tap-harness-files
+++ b/src/external/c-tap-harness-files
@@ -5,6 +5,7 @@ tests/runtests.c	runtests.c
 tests/tap/basic.c	tap/basic.c
 tests/tap/basic.h	tap/basic.h
 tests/tap/float.c	tap/float.c
+tests/tap/float.h	tap/float.h
 tests/tap/libtap.sh	tap/libtap.sh
 tests/tap/macros.h	tap/macros.h