diff --git a/meson.build b/meson.build
index 7e8b59da..c6bc434a 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
 	'wlroots',
 	'c',
-	version: '0.17.0',
+	version: '0.18.0-dev',
 	license: 'MIT',
 	meson_version: '>=0.59.0',
 	default_options: [
@@ -15,7 +15,7 @@ project(
 # necessary for bugfix releases. Increasing soversion is required because
 # wlroots never guarantees ABI stability -- only API stability is guaranteed
 # between minor releases.
-soversion = 12
+soversion = 13
 
 little_endian = target_machine.endian() == 'little'
 big_endian = target_machine.endian() == 'big'
diff --git a/tinywl/Makefile b/tinywl/Makefile
index 8f1df207..982fc384 100644
--- a/tinywl/Makefile
+++ b/tinywl/Makefile
@@ -1,7 +1,7 @@
 WAYLAND_PROTOCOLS=$(shell pkg-config --variable=pkgdatadir wayland-protocols)
 WAYLAND_SCANNER=$(shell pkg-config --variable=wayland_scanner wayland-scanner)
 LIBS=\
-	 $(shell pkg-config --cflags --libs "wlroots >= 0.17.0") \
+	 $(shell pkg-config --cflags --libs "wlroots >= 0.18.0-dev") \
 	 $(shell pkg-config --cflags --libs wayland-server) \
 	 $(shell pkg-config --cflags --libs xkbcommon)