diff --git a/cpp/ql/src/semmlecode.cpp.dbscheme b/cpp/ql/src/semmlecode.cpp.dbscheme
index d6ca4ebb768..874439f4c50 100644
--- a/cpp/ql/src/semmlecode.cpp.dbscheme
+++ b/cpp/ql/src/semmlecode.cpp.dbscheme
@@ -616,6 +616,7 @@ enumconstants(
   | 48 = _Float64x
   | 49 = _Float128
   | 50 = _Float128x
+  | 51 = char8_t
   ;
 */
 builtintypes(