diff --git a/Makefile.am b/Makefile.am
index 1c999e460..569ab75a4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -288,7 +288,7 @@ tests_jsontest_LDADD = ${jsoncpp_LIBS} libgromox_common.la libgromox_email.la
 tests_lzxpress_SOURCES = tests/lzxpress.cpp
 tests_lzxpress_LDADD = ${libHX_LIBS} libgromox_mapi.la
 tests_oxcmail_ie_SOURCES = tests/oxcmail_ie.cpp
-tests_oxcmail_ie_LDADD = libgromox_email.la libgromox_mapi.la
+tests_oxcmail_ie_LDADD = ${libHX_LIBS} libgromox_common.la libgromox_email.la libgromox_mapi.la
 tests_ucvttest_SOURCES = tests/ucvttest.cpp
 tests_ucvttest_LDADD = libgromox_mapi.la
 tests_utiltest_SOURCES = tests/utiltest.cpp
diff --git a/configure.ac b/configure.ac
index 94a8ecb71..deccedf24 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([gromox], [2.30])
+AC_INIT([gromox], [2.31])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([build-aux])
 AC_PREFIX_DEFAULT([/usr])
diff --git a/doc/changelog.rst b/doc/changelog.rst
index 4f07a871a..34a9c8eb2 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -1,3 +1,26 @@
+Gromox 2.31 (2024-08-14)
+========================
+
+Fixes:
+
+* freebusy: get_freebusy erroneously underreported occurrences for
+  yearly occurrences
+* freebusy: the get_freebusy routine erroneously landed in an infinite loop if
+  a yearly-recurring February 29 appointment was originally created in a year
+  not divisible by 12.
+
+Enhancements:
+
+* oxcmail: take /etc/mime.types under consideration when adding extensions
+  to attachments
+
+Changes:
+
+* oxcmail: priorities for MIME parts have been rectified for
+  multipart/alternative and non-alternative containers; the conversion routine
+  is no longer making picks across multiple container siblings.
+
+
 2.30 (2024-06-21)
 =================
 
diff --git a/tests/oxcmail_ie.cpp b/tests/oxcmail_ie.cpp
index 60fb125ea..63265888b 100644
--- a/tests/oxcmail_ie.cpp
+++ b/tests/oxcmail_ie.cpp
@@ -168,7 +168,6 @@ static int select_parts_3()
 	assert(m.load_from_str_move(data, std::size(data)));
 	auto mc = oxcmail_import("us-ascii", "UTC", &m, g_alloc, ee_get_propids);
 	assert(mc != nullptr);
-	gi_print(0, *mc);
 	auto atl = mc->children.pattachments;
 	assert(atl != nullptr);
 	if (atl->count != 3)