diff --git a/pl/cross/api/docs/books.txt b/pl/cross/api/docs/books.txt
index 5dbd92eed..0088ca7f3 100644
--- a/pl/cross/api/docs/books.txt
+++ b/pl/cross/api/docs/books.txt
@@ -1,3 +1,6 @@
+2023
+De - API Management 2nd ed
+    87927F6D1A7CBE4119DDDA5AFFE1341E
 2022
 PonelatRosenstock - Designing APIs with Swagger and OpenAPI
     995F3264D1F4FFB845CD8320D74C82EB
diff --git a/pl/java/libfws/spring/boot/test/features/tricks.txt b/pl/java/libfws/spring/boot/test/features/tricks.txt
new file mode 100644
index 000000000..e818aa166
--- /dev/null
+++ b/pl/java/libfws/spring/boot/test/features/tricks.txt
@@ -0,0 +1,3 @@
+import org.springframework.test.annotation.DirtiesContext;
+
+@DirtiesContext(classMode = DirtiesContext.ClassMode.BEFORE_CLASS)