diff --git a/Makefile b/Makefile
index c895ee7..222ff4b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION = 0.4
+VERSION = 0.5
 CFLAGS += -std=c99 -g -Wall -Wextra -DVERSION=\"${VERSION}\" -D_POSIX_C_SOURCE=200809L
 LDLIBS = -lm