diff --git a/version.inc b/version.inc
index 36c15a52d..b34ee729d 100644
--- a/version.inc
+++ b/version.inc
@@ -3,7 +3,7 @@
 
 set(SLIC3R_APP_NAME "PrusaSlicer")
 set(SLIC3R_APP_KEY "PrusaSlicer")
-set(SLIC3R_VERSION "2.3.0-alpha3")
+set(SLIC3R_VERSION "2.3.0-alpha4")
 set(SLIC3R_BUILD_ID "PrusaSlicer-${SLIC3R_VERSION}+UNKNOWN")
 set(SLIC3R_RC_VERSION "2,3,0,0")
 set(SLIC3R_RC_VERSION_DOTS "2.3.0.0")