diff --git a/tsc/CMakeLists.txt b/tsc/CMakeLists.txt
index 353c02063..29403e611 100644
--- a/tsc/CMakeLists.txt
+++ b/tsc/CMakeLists.txt
@@ -31,7 +31,7 @@ include(GNUInstallDirs)
 set(TSC_VERSION_MAJOR 2)
 set(TSC_VERSION_MINOR 1)
 set(TSC_VERSION_PATCH 0)
-set(TSC_VERSION_POSTFIX "beta2")
+set(TSC_VERSION_POSTFIX "rc1")
 string(TIMESTAMP TSC_COMPILE_YEAR "%Y")
 string(TIMESTAMP TSC_COMPILE_MONTH "%m")
 string(TIMESTAMP TSC_COMPILE_DAY "%d")