diff --git a/Makefile b/Makefile
index c0b1251..346d873 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
+VERSION=1.0.0
 CC=cc
-CFLAGS=-Wall -Wextra -Werror -Wno-unused-parameter -std=c99 -pedantic
+CFLAGS=-DVERSION='"$(VERSION)"' -Wall -Wextra -Werror -Wno-unused-parameter -std=c99 -pedantic
 LDFLAGS=-static
 INCLUDE=-Iinclude
 PREFIX=/usr/local
diff --git a/src/main.c b/src/main.c
index 5a67ac7..74f1f33 100644
--- a/src/main.c
+++ b/src/main.c
@@ -295,8 +295,7 @@ static void parse_document(struct parser *p) {
 }
 
 static void output_scdoc_preamble(struct parser *p) {
-	// TODO: Add version here
-	fprintf(p->output, ".\\\" Generated by scdoc\n");
+	fprintf(p->output, ".\\\" Generated by scdoc " VERSION "\n");
 	fprintf(p->output, ".\\\" Fix weird qutation marks:\n");
 	fprintf(p->output, ".\\\" http://bugs.debian.org/507673\n");
 	fprintf(p->output, ".\\\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html\n");