diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..cb3f47d
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,4 @@
+# Changelog
+
+## [v2023.03.07] 2023-03-07
+Initial release
diff --git a/build.sh b/build.sh
index 9cc8053..cad12b3 100755
--- a/build.sh
+++ b/build.sh
@@ -4,7 +4,7 @@ INSTALL_BINARY=/usr/bin/jasc-pal-thumbnailer
 INSTALL_DOCS=/usr/share/doc/jasc-pal-thumbnailer/
 CC=gcc
 CFLAGS=-Wall\ -Werror\ -Wextra
-VERSION=$(date -I)-$(git rev-parse --short HEAD)
+VERSION=2023.03.07
 
 function build_binary() {
 	mkdir -p $OUTDIR
diff --git a/src/main/c/jasc-pal-thumbnailer.c b/src/main/c/jasc-pal-thumbnailer.c
index 2004049..674216f 100644
--- a/src/main/c/jasc-pal-thumbnailer.c
+++ b/src/main/c/jasc-pal-thumbnailer.c
@@ -21,7 +21,7 @@
 #endif
 
 const char PROGRAM_NAME[] = "jasc-pal-thumbnailer";
-const char PROGRAM_VERSION[] = "0000.00.00";
+const char PROGRAM_VERSION[] = "2023.03.07";
 const char PROGRAM_HOMEPAGE[] = "";
 const char PROGRAM_DESCRIPTION[] = "A thumbnailer for JASC-PAL files";