diff --git a/doc/Doxyfile b/doc/Doxyfile
index 91183e7c5f..86262aea4e 100644
--- a/doc/Doxyfile
+++ b/doc/Doxyfile
@@ -2066,7 +2066,7 @@ PREDEFINED             = \
                          HAVE_LOCALTIME_R=1 \
                          HAVE_LRDF=1 \
                          HAVE_LV2=1 \
-                         HAVE_LV2_1_17_2=1 \
+                         HAVE_LV2_1_18_0=1 \
                          HAVE_POSIX_MEMALIGN=1 \
                          HAVE_PULSEAUDIO=1 \
                          HAVE_READLINE=1 \
diff --git a/gtk2_ardour/lv2_plugin_ui.cc b/gtk2_ardour/lv2_plugin_ui.cc
index e898c34af5..268a6281ad 100644
--- a/gtk2_ardour/lv2_plugin_ui.cc
+++ b/gtk2_ardour/lv2_plugin_ui.cc
@@ -139,7 +139,7 @@ LV2PluginUI::set_path_property (int response,
 	active_parameter_requests.erase (desc.key);
 }
 
-#ifdef HAVE_LV2_1_17_2
+#ifdef HAVE_LV2_1_18_0
 LV2UI_Request_Value_Status
 LV2PluginUI::request_value(void*                     handle,
                            LV2_URID                  key,
@@ -336,7 +336,7 @@ LV2PluginUI::lv2ui_instantiate(const std::string& title)
 		features[fi] = features_src[fi];
 	}
 
-#ifdef HAVE_LV2_1_17_2
+#ifdef HAVE_LV2_1_18_0
 	_lv2ui_request_value.handle  = this;
 	_lv2ui_request_value.request = LV2PluginUI::request_value;
 	_lv2ui_request_feature.URI   = LV2_UI__requestValue;
@@ -376,7 +376,7 @@ LV2PluginUI::lv2ui_instantiate(const std::string& title)
 	}
 
 	features[fi] = NULL;
-#ifdef HAVE_LV2_1_17_2
+#ifdef HAVE_LV2_1_18_0
 	assert (fi == features_count + (is_external_ui ? 3 : 2));
 #else
 	assert (fi == features_count + (is_external_ui ? 2 : 1));
diff --git a/gtk2_ardour/lv2_plugin_ui.h b/gtk2_ardour/lv2_plugin_ui.h
index 86b0ec8ecc..0caef7bc6c 100644
--- a/gtk2_ardour/lv2_plugin_ui.h
+++ b/gtk2_ardour/lv2_plugin_ui.h
@@ -84,7 +84,7 @@ private:
 	struct lv2_external_ui_host               _external_ui_host;
 	LV2_Feature                               _external_ui_feature;
 	LV2_Feature                               _external_kxui_feature;
-#ifdef HAVE_LV2_1_17_2
+#ifdef HAVE_LV2_1_18_0
 	LV2UI_Request_Value                       _lv2ui_request_value;
 	LV2_Feature                               _lv2ui_request_feature;
 #endif
@@ -115,7 +115,7 @@ private:
 	                  uint32_t port_index,
 	                  bool     grabbed);
 
-#ifdef HAVE_LV2_1_17_2
+#ifdef HAVE_LV2_1_18_0
 	static LV2UI_Request_Value_Status
 	request_value(void*                     handle,
 	              LV2_URID                  key,
diff --git a/libs/ardour/wscript b/libs/ardour/wscript
index d69e6fe9c3..4418db8f92 100644
--- a/libs/ardour/wscript
+++ b/libs/ardour/wscript
@@ -321,8 +321,8 @@ def configure(conf):
 
     autowaf.check_pkg(conf, 'lv2', uselib_store='LV2',
                       atleast_version='1.16.0', mandatory=True)
-    autowaf.check_pkg(conf, 'lv2', uselib_store='LV2_1_17_2',
-                      atleast_version='1.17.2', mandatory=False)
+    autowaf.check_pkg(conf, 'lv2', uselib_store='LV2_1_18_0',
+                      atleast_version='1.18.0', mandatory=False)
     autowaf.check_pkg(conf, 'serd-0', uselib_store='SERD',
                       atleast_version='0.14.0', mandatory=True)
     autowaf.check_pkg(conf, 'sord-0', uselib_store='SORD',
diff --git a/tools/doxy2json/ardourdoc.sh b/tools/doxy2json/ardourdoc.sh
index a8db8baddd..8694ac5c06 100755
--- a/tools/doxy2json/ardourdoc.sh
+++ b/tools/doxy2json/ardourdoc.sh
@@ -16,7 +16,7 @@ time ./tools/doxy2json/doxy2json -j 4 \
 	-D PROGRAM_NAME=\"Ardour\" -D PROGRAM_VERSION=\"6\" -D LOCALEDIR=\"/\" \
 	-D ARCH_X86 -D CONFIG_ARCH=\"x86_64\" -D WAF_BUILD -D CANVAS_COMPATIBILITY=1 \
 	-D HAVE_AUBIO=1 -D HAVE_ALSA=1 -D HAVE_GLIB=1 -D HAVE_LIBS_LUA=1 -D HAVE_XML=1 -D PTFORMAT=1 \
-	-D HAVE_SAMPLERATE=1 -D HAVE_LV2=1 -D HAVE_LV2_1_17_2=1 -D HAVE_SERD=1 -D HAVE_SORD=1 -D HAVE_SRATOM=1 -D HAVE_LILV=1 -D HAVE_LV2_1_0_0=1 \
+	-D HAVE_SAMPLERATE=1 -D HAVE_LV2=1 -D HAVE_LV2_1_18_0=1 -D HAVE_SERD=1 -D HAVE_SORD=1 -D HAVE_SRATOM=1 -D HAVE_LILV=1 -D HAVE_LV2_1_0_0=1 \
 	-D HAVE_SUIL=1 -D LV2_SUPPORT=1 -D LV2_EXTENDED=1 -D HAVE_GTK=1 -D HAVE_LIBS_GTKMM2EXT=1 \
 	-D HAVE_X11=1  -D LXVST_64BIT=1 -D LXVST_SUPPORT=1 -D HAVE_TAGLIB=1 -D HAVE_POSIX_MEMALIGN=1 -D HAVE_VAMPSDK=1 -D HAVE_VAMPHOSTSDK=1 -D HAVE_RUBBERBAND=1 -D ENABLE_NLS=1 \
 	-D HAVE_CURL=1 -D HAVE_LO=1 -D HAVE_LRDF=1 -D _VAMP_NO_PLUGIN_NAMESPACE=1 -D _VAMP_NO_HOST_NAMESPACE=1 \