diff --git a/.gitignore b/.gitignore
index 0400697..d0bed41 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 /libdazzle-3.25.92.tar.xz
 /libdazzle-3.26.0.tar.xz
 /libdazzle-3.26.1.tar.xz
+/libdazzle-3.27.3.tar.xz
diff --git a/0001-tests-fix-some-leaks-under-asan.patch b/0001-tests-fix-some-leaks-under-asan.patch
new file mode 100644
index 0000000..f399b76
--- /dev/null
+++ b/0001-tests-fix-some-leaks-under-asan.patch
@@ -0,0 +1,56 @@
+From 36d64ffdb1e6397dda9f0917a9bbb344764feb6a Mon Sep 17 00:00:00 2001
+From: Christian Hergert <chergert@redhat.com>
+Date: Wed, 13 Dec 2017 21:49:45 -0800
+Subject: [PATCH] tests: fix some leaks under asan
+
+---
+ tests/test-recursive-monitor.c | 9 +++++++--
+ tests/test-trie.c              | 2 ++
+ 2 files changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/tests/test-recursive-monitor.c b/tests/test-recursive-monitor.c
+index c77cc6a9aac5..f2e187dc4376 100644
+--- a/tests/test-recursive-monitor.c
++++ b/tests/test-recursive-monitor.c
+@@ -145,11 +145,11 @@ test_basic (void)
+   state.created = g_hash_table_new_full (g_file_hash,
+                                          (GEqualFunc) g_file_equal,
+                                          g_object_unref,
+-                                         g_object_unref);
++                                         NULL);
+   state.deleted = g_hash_table_new_full (g_file_hash,
+                                          (GEqualFunc) g_file_equal,
+                                          g_object_unref,
+-                                         g_object_unref);
++                                         NULL);
+ 
+   /* Cleanup any previously failed run */
+   if (g_file_test ("recursive-dir", G_FILE_TEST_EXISTS))
+@@ -192,6 +192,11 @@ test_basic (void)
+   g_main_loop_run (state.main_loop);
+ 
+   dzl_recursive_file_monitor_cancel (state.monitor);
++
++  g_clear_pointer (&state.main_loop, g_main_loop_unref);
++  g_clear_pointer (&state.created, g_hash_table_unref);
++  g_clear_pointer (&state.deleted, g_hash_table_unref);
++  g_clear_object (&state.monitor);
+ }
+ 
+ gint
+diff --git a/tests/test-trie.c b/tests/test-trie.c
+index 4b934a14d81b..88b0f477ad5c 100644
+--- a/tests/test-trie.c
++++ b/tests/test-trie.c
+@@ -124,6 +124,8 @@ test_dzl_trie_gauntlet (void)
+ 
+    g_strfreev(words);
+    words = NULL;
++
++   g_timer_destroy (timer);
+ }
+ 
+ gint
+-- 
+2.14.3
+
diff --git a/libdazzle.spec b/libdazzle.spec
index adb95fe..fadd8ec 100644
--- a/libdazzle.spec
+++ b/libdazzle.spec
@@ -1,11 +1,14 @@
 Name:           libdazzle
-Version:        3.26.1
+Version:        3.27.3
 Release:        1%{?dist}
 Summary:        Experimental new features for GTK+ and GLib
 
 License:        GPLv3+
 URL:            https://git.gnome.org/browse/libdazzle/
-Source0:        https://download.gnome.org/sources/%{name}/3.26/%{name}-%{version}.tar.xz
+Source0:        https://download.gnome.org/sources/%{name}/3.27/%{name}-%{version}.tar.xz
+
+# Backported from upstream
+Patch0:         0001-tests-fix-some-leaks-under-asan.patch
 
 BuildRequires:  gtk-doc
 BuildRequires:  meson
@@ -84,6 +87,9 @@ dbus-run-session -- xvfb-run -w 10 ninja test %{__ninja_common_opts} -C %{_vpath
 
 
 %changelog
+* Tue Dec 19 2017 Kalev Lember <klember@redhat.com> - 3.27.3-1
+- Update to 3.27.3
+
 * Tue Oct  3 2017 Yanko Kaneti <yaneti@declera.com> - 3.26.1-1
 - Update to 3.26.1
 
diff --git a/sources b/sources
index e3a774b..e0c7a0c 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libdazzle-3.26.1.tar.xz) = 08844fa4c66d48376ac27995b685772dda0c7e2fae1d143e7c250fc476ad84622eda97650fbd60552a9807d99e693de8b2562a97842bc6b78004e8111da21c46
+SHA512 (libdazzle-3.27.3.tar.xz) = f844ae0d459a822daf4a5198dc1e9284d6004a7039570ef74a1a4ce92a087d35fc68a4bb5948d6aaf988f78c9ee8e98dfa2f00b8d3d15e42bdc0f469079c75b3