diff --git a/.travis.yml b/.travis.yml
index 0f1f4a0..7a5126e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ matrix:
 sudo: false
 
 before_install:
+  - ./tests/cfg/pki/create_tsa_certs
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then xcode-select --install; fi
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update  ; fi
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install argp-standalone; fi
@@ -31,4 +32,4 @@ language: c
 
 compiler: clang
 
-script: cmake . -DBUNDLE_CIVETWEB=ON && make 
+script: cmake . -DBUNDLE_CIVETWEB=ON && make && ./tests/external_test.sh
diff --git a/tests/external_test.sh b/tests/external_test.sh
new file mode 100755
index 0000000..089d74f
--- /dev/null
+++ b/tests/external_test.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+timeout 20 ./uts-server -c tests/cfg/uts-server.cnf -D &
+
+./goodies/timestamp-file.sh -i README.md -u http://localhost:2020 -r -O "-cert" || exit 1
+./goodies/timestamp-file.sh -i README.md -u http://localhost:2020 -r -O "-cert" || exit 1
+./goodies/timestamp-file.sh -i README.md -u http://localhost:2020 -r -O "-cert" || exit 1
+