diff --git a/contrib/teamcity/build-configurations.sh b/contrib/teamcity/build-configurations.sh
--- a/contrib/teamcity/build-configurations.sh
+++ b/contrib/teamcity/build-configurations.sh
@@ -18,6 +18,11 @@
     ./build.sh
     ;;
 
+  build-ubsan)
+    export CONFIGURE_FLAGS="--enable-debug --with-sanitizers=undefined --disable-ccache CC=clang CXX=clang++"
+    ./build.sh
+    ;;
+
   build-default)
     ./build.sh
     ./build-secp256k1.sh