diff --git a/test/run_tests_using_sanitizers.sh b/test/run_tests_using_sanitizers.sh
index 70bea07..b86ba0f 100755
--- a/test/run_tests_using_sanitizers.sh
+++ b/test/run_tests_using_sanitizers.sh
@@ -29,38 +29,38 @@ COMMON_FLAGS="-g -O0 -Wno-cpp"
 # run tests with libstc++ debug mode, https://gcc.gnu.org/onlinedocs/libstdc++/manual/debug_mode.html
 make clean
 ./configure CXXFLAGS="$COMMON_FLAGS -D_GLIBCXX_DEBUG"
-make
+make --jobs="$(nproc)"
 make check -C test/
 
 # run tests under AddressSanitizer, https://clang.llvm.org/docs/AddressSanitizer.html
 make clean
 ./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=address -fsanitize-address-use-after-scope"
-make
+make --jobs="$(nproc)"
 ASAN_OPTIONS='detect_leaks=1,detect_stack_use_after_return=1' make check -C test/
 
 # run tests under MemorySanitizer, https://clang.llvm.org/docs/MemorySanitizer.html
 # TODO: this requires a custom libc++
 #make clean
 #./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=memory"
-#make
+#make --jobs="$(nproc)"
 #make check -C test/
 
 # run tests under ThreadSanitizer, https://clang.llvm.org/docs/ThreadSanitizer.html
 make clean
 ./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=thread"
-make
+make --jobs="$(nproc)"
 TSAN_OPTIONS='halt_on_error=1' make check -C test/
 
 # run tests under UndefinedBehaviorSanitizer, https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html
 make clean
 ./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=undefined,implicit-conversion,local-bounds,unsigned-integer-overflow"
-make
+make --jobs="$(nproc)"
 make check -C test/
 
 # run tests with Valgrind
 make clean
 ./configure CXXFLAGS="$COMMON_FLAGS"
-make
+make --jobs="$(nproc)"
 RETRIES=100 VALGRIND="--leak-check=full --error-exitcode=1" make check -C test/
 
 #