diff --git a/Dockerfile b/Dockerfile
index 4fee1600d..a6ab55421 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM debian:11-slim
 LABEL org.opencontainers.image.source=https://github.com/gbdev/rgbds
-ARG version=0.8.0
+ARG version=0.9.0-rc1
 WORKDIR /rgbds
 
 COPY . .
diff --git a/include/version.hpp b/include/version.hpp
index 63a74dcc4..916e41f00 100644
--- a/include/version.hpp
+++ b/include/version.hpp
@@ -6,8 +6,9 @@
 extern "C" {
 
 #define PACKAGE_VERSION_MAJOR 0
-#define PACKAGE_VERSION_MINOR 8
+#define PACKAGE_VERSION_MINOR 9
 #define PACKAGE_VERSION_PATCH 0
+#define PACKAGE_VERSION_RC    1
 
 char const *get_package_version_string();
 }