diff --git a/science/libsigmf/Portfile b/science/libsigmf/Portfile
index 3c2380c6234..2e82e34c7f1 100644
--- a/science/libsigmf/Portfile
+++ b/science/libsigmf/Portfile
@@ -13,7 +13,7 @@ long_description    {*}${description}
 github.setup        f4exb libsigmf 299dc8f9725f1733e5cc1ce8a69fbcf7f18a2f58
 github.tarball_from archive
 version             20230526-[string range ${github.version} 0 7]
-revision            0
+revision            1
 checksums           rmd160  bec45a93fed42d6eab21d287833e56edebf541b1 \
                     sha256  c755b9e94e39414e2094a618dca93235e34f02daf0175998668049f9254a9cbb \
                     size    43991
@@ -25,6 +25,11 @@ patchfiles-append \
     flatbuffersV2.patch \
     flatbuffers_shared_remove.patch
 
+# Re-generate the flatbuffers headers
+post-patch {
+    delete {*}[glob ${worksrcpath}/sigmf_protocols/*.h]
+}
+
 depends_build-append \
     port:pkgconfig