diff --git a/libguile/loader.h b/libguile/loader.h
index 09fb0afb6..765714fc2 100644
--- a/libguile/loader.h
+++ b/libguile/loader.h
@@ -40,7 +40,7 @@
 /* Major and minor versions must be single characters. */
 #define SCM_OBJCODE_MAJOR_VERSION 4
 #define SCM_OBJCODE_MINIMUM_MINOR_VERSION 2
-#define SCM_OBJCODE_MINOR_VERSION 3
+#define SCM_OBJCODE_MINOR_VERSION 4
 #define SCM_OBJCODE_MAJOR_VERSION_STRING        \
   SCM_CPP_STRINGIFY(SCM_OBJCODE_MAJOR_VERSION)
 #define SCM_OBJCODE_MINOR_VERSION_STRING        \
diff --git a/module/system/vm/assembler.scm b/module/system/vm/assembler.scm
index 698d44dac..8599aa005 100644
--- a/module/system/vm/assembler.scm
+++ b/module/system/vm/assembler.scm
@@ -2201,7 +2201,7 @@ needed."
 
 ;; FIXME: Define these somewhere central, shared with C.
 (define *bytecode-major-version* #x0300)
-(define *bytecode-minor-version* 3)
+(define *bytecode-minor-version* 4)
 
 (define (link-dynamic-section asm text rw rw-init frame-maps)
   "Link the dynamic section for an ELF image with bytecode @var{text},