diff --git a/testlibs/apiguardian-api-1.1.0.jar b/testlibs/apiguardian-api-1.1.0.jar
new file mode 100644
index 0000000000000000000000000000000000000000..e6fcead36fe0c8f7920f8f7abc532a62d51350c4
Binary files /dev/null and b/testlibs/apiguardian-api-1.1.0.jar differ
diff --git a/testlibs/junit-platform-commons-1.5.1.jar b/testlibs/junit-platform-commons-1.5.1.jar
new file mode 100644
index 0000000000000000000000000000000000000000..f941792ef1b10be01cf1e168ad2d8b854c7745ae
Binary files /dev/null and b/testlibs/junit-platform-commons-1.5.1.jar differ
diff --git a/testlibs/junit-platform-console-1.5.1.jar b/testlibs/junit-platform-console-1.5.1.jar
new file mode 100644
index 0000000000000000000000000000000000000000..c95785af33907b2e5ed6c09b995d6a2e26e78ca7
Binary files /dev/null and b/testlibs/junit-platform-console-1.5.1.jar differ
diff --git a/testlibs/junit-platform-engine-1.5.1.jar b/testlibs/junit-platform-engine-1.5.1.jar
new file mode 100644
index 0000000000000000000000000000000000000000..34d024fd16909d73b8d9b452b986aa6adabd090d
Binary files /dev/null and b/testlibs/junit-platform-engine-1.5.1.jar differ
diff --git a/testlibs/junit-platform-launcher-1.5.1.jar b/testlibs/junit-platform-launcher-1.5.1.jar
new file mode 100644
index 0000000000000000000000000000000000000000..829fa2c147056e542000d22117e0436633524b94
Binary files /dev/null and b/testlibs/junit-platform-launcher-1.5.1.jar differ
diff --git a/testlibs/junit-platform-reporting-1.5.1.jar b/testlibs/junit-platform-reporting-1.5.1.jar
new file mode 100644
index 0000000000000000000000000000000000000000..45329860b2fc080e4ec5691f3e00edb41cc86a5f
Binary files /dev/null and b/testlibs/junit-platform-reporting-1.5.1.jar differ
diff --git a/testlibs/opentest4j-1.2.0.jar b/testlibs/opentest4j-1.2.0.jar
new file mode 100644
index 0000000000000000000000000000000000000000..d5006361a412f458525afc317aecb067dd093d0a
Binary files /dev/null and b/testlibs/opentest4j-1.2.0.jar differ