diff -r b19c8e5795eb -r 4348cb0e1ac3 configure.ac
--- a/configure.ac	Thu Mar 02 11:26:00 2017 +0000
+++ b/configure.ac	Tue Apr 24 20:58:03 2018 +0100
@@ -136,8 +136,8 @@
 ##################################################
 PKG_CHECK_MODULES(WHELK,[whelk])
 PKG_CHECK_MODULES(RAZOR,[razor >= 0.5.4],[:],[RAZOR_LIBS=-lrazor])
-PKG_CHECK_MODULES(EXPAT,[expat >= 2.1],[:],
-  [PKG_CHECK_MODULES(EXPAT,[expat21],[:],[EXPAT_LIBS=-lexpat])])
+PKG_CHECK_MODULES(EXPAT,[expat >= 2.2],[:],
+  [PKG_CHECK_MODULES(EXPAT,[expat22],[:],[EXPAT_LIBS=-lexpat])])
 PKG_CHECK_MODULES(ZLIB,[zlib],[:],[ZLIB_LIBS=-lz])
 PKG_CHECK_MODULES(LUA,[lua],[:],[LUA_LIBS=-llua])
 PKG_CHECK_MODULES(GIO,[gio-2.0])
@@ -166,8 +166,8 @@
 AC_SUBST(GUI_LIBS)
 save_PKG_CONFIG="$PKG_CONFIG"
 PKG_CONFIG="$PKG_CONFIG --static"
-PKG_CHECK_MODULES(SETUP,[whelk razor >= 0.5.4 expat >= 2.1 zlib gio-2.0],[:],
-  [PKG_CHECK_MODULES(SETUP,[whelk razor >= 0.5.4 expat21 zlib gio-2.0])])
+PKG_CHECK_MODULES(SETUP,[whelk razor >= 0.5.4 expat >= 2.2 zlib gio-2.0],[:],
+  [PKG_CHECK_MODULES(SETUP,[whelk razor >= 0.5.4 expat22 zlib gio-2.0])])
 if test -n "$host_mingw"; then
     # Hacks:
     # -liconv is required for mingw. This probably stems from our use of