diff --git a/version.inc b/version.inc
index cf8cf76b3..abff61e8a 100644
--- a/version.inc
+++ b/version.inc
@@ -3,7 +3,7 @@
 
 set(SLIC3R_APP_NAME "PrusaSlicer")
 set(SLIC3R_APP_KEY "PrusaSlicer")
-set(SLIC3R_VERSION "2.5.1")
+set(SLIC3R_VERSION "2.5.2-rc1")
 set(SLIC3R_BUILD_ID "PrusaSlicer-${SLIC3R_VERSION}+UNKNOWN")
-set(SLIC3R_RC_VERSION "2,5,1,0")
-set(SLIC3R_RC_VERSION_DOTS "2.5.1.0")
+set(SLIC3R_RC_VERSION "2,5,2,0")
+set(SLIC3R_RC_VERSION_DOTS "2.5.2.0")