diff --git a/Version.md b/Version.md
index 5b969dca..91483711 100644
--- a/Version.md
+++ b/Version.md
@@ -1,4 +1,4 @@
-Version 4.0.4 (2019/12/24)
+Version 4.0.5 (2020/01/10)
 
 This release needs the following packages:
 
diff --git a/configure.ac b/configure.ac
index 442297fe..e6f5f2b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_PREREQ(2.60)
-AC_INIT(libminigui, 4.0.4)
+AC_INIT(libminigui, 4.0.5)
 AC_CONFIG_SRCDIR(src/main/main.c)
 
 dnl Set various version strings - taken gratefully from the SDL sources
@@ -16,9 +16,9 @@ dnl Set various version strings - taken gratefully from the SDL sources
 #
 MINIGUI_MAJOR_VERSION=4
 MINIGUI_MINOR_VERSION=0
-MINIGUI_MICRO_VERSION=4
-MINIGUI_INTERFACE_AGE=0
-MINIGUI_BINARY_AGE=0
+MINIGUI_MICRO_VERSION=5
+MINIGUI_INTERFACE_AGE=1
+MINIGUI_BINARY_AGE=1
 MINIGUI_VERSION=$MINIGUI_MAJOR_VERSION.$MINIGUI_MINOR_VERSION.$MINIGUI_MICRO_VERSION
 
 AC_SUBST(MINIGUI_MAJOR_VERSION)