Index: configure.ac
--- configure.ac.orig
+++ configure.ac
@@ -1,13 +1,13 @@
 AC_PREREQ(2.52)
 
-AC_INIT([Apertium English-Catalan], [1.0.1], [apertium-stuff@lists.sourceforge.net], [apertium-eng-cat], [http://wiki.apertium.org/wiki/Apertium-eng-cat])
+AC_INIT([Apertium English-Catalan], [1.0.1], [apertium-stuff@lists.sourceforge.net], [apertium-eng-cat], [https://wiki.apertium.org/wiki/Apertium-eng-cat])
 AM_INIT_AUTOMAKE
 
 AC_PROG_AWK
 
-PKG_CHECK_MODULES(APERTIUM, apertium >= 3.6.0)
-PKG_CHECK_MODULES(LTTOOLBOX, lttoolbox >= 3.5.0)
-PKG_CHECK_MODULES(CG3, cg3 >= 1.3.0)
+PKG_CHECK_MODULES(APERTIUM, apertium >= 3.7.2)
+PKG_CHECK_MODULES(LTTOOLBOX, lttoolbox >= 3.5.4)
+PKG_CHECK_MODULES(CG3, cg3 >= 1.3.3)
 PKG_CHECK_MODULES(APERTIUM_LEX_TOOLS, apertium-lex-tools >= 0.2.2)
 PKG_CHECK_MODULES(APERTIUM_SEPARABLE, apertium-separable >= 0.3.3)
 PKG_CHECK_MODULES(APERTIUM_ANAPHORA, apertium-anaphora >= 0.0.2)
@@ -15,10 +15,13 @@ PKG_CHECK_MODULES(APERTIUM_ANAPHORA, apertium-anaphora
 AC_PATH_PROGS(ZCAT, [gzcat zcat], [false])
 AS_IF([test x$ZCAT = xfalse], [AC_MSG_ERROR([You don't have zcat nor gzcat installed])])
 
-m4_ifdef([AP_CHECK_LING],[],[AC_MSG_ERROR([AP_CHECK_LING not defined, is apertium.m4 in ACLOCAL_PATH? See: http://wiki.apertium.org/wiki/Installation_troubleshooting])])
+m4_ifdef([AP_CHECK_LING],[],[AC_MSG_ERROR([AP_CHECK_LING not defined, is apertium.m4 in ACLOCAL_PATH? See: https://wiki.apertium.org/wiki/Installation_troubleshooting])])
 
 AP_CHECK_LING([1], [apertium-eng], [0.1.0])
 AP_CHECK_LING([2], [apertium-cat], [2.8.0])
+
+PKG_CHECK_MODULES(REGTEST, apertium-regtest >= 0.0.1, [],
+                  [AC_MSG_WARN([Running tests requires apertium-regtest])])
 
 AP_MKINCLUDE
 
