diff --git a/.drone/drone.sh b/.drone/drone.sh
index 713f4a4..2a8325b 100755
--- a/.drone/drone.sh
+++ b/.drone/drone.sh
@@ -24,4 +24,4 @@ python tools/boostdep/depinst/depinst.py $LIBRARY
 ./b2 -d0 headers
 
 echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
-./b2 -j3 libs/$LIBRARY/test toolset=$TOOLSET cxxstd=$CXXSTD variant=debug,release ${ADDRMD:+address-model=$ADDRMD} ${UBSAN:+undefined-sanitizer=norecover debug-symbols=on} ${ASAN:+address-sanitizer=norecover debug-symbols=on} ${LINKFLAGS:+linkflags=$LINKFLAGS}
+./b2 -j2 libs/$LIBRARY/test toolset=$TOOLSET cxxstd=$CXXSTD variant=debug,release ${ADDRMD:+address-model=$ADDRMD} ${UBSAN:+undefined-sanitizer=norecover debug-symbols=on} ${ASAN:+address-sanitizer=norecover debug-symbols=on} ${LINKFLAGS:+linkflags=$LINKFLAGS}