--- functionaljava-5.0/core/src/main/java/fj/Monoid.java	2025-10-23 17:44:13.280474920 +0200
+++ functionaljava-5.0/core/src/main/java/fj/Monoid.java	2025-10-23 17:50:46.140970970 +0200
@@ -1,6 +1,7 @@
 package fj;
 
 import fj.data.*;
+import fj.data.IO;
 
 import static fj.Function.*;
 import static fj.Semigroup.semigroupDef;
--- functionaljava-5.0/core/src/main/java/fj/P2.java	2025-10-23 17:44:13.280694593 +0200
+++ functionaljava-5.0/core/src/main/java/fj/P2.java	2025-10-23 17:48:14.924033452 +0200
@@ -3,6 +3,7 @@
 import static fj.Function.*;
 import static fj.P.weakMemo;
 import static fj.data.optic.PLens.pLens;
+import fj.data.IO;
 import fj.data.*;
 import fj.data.optic.Lens;
 import fj.data.optic.PLens;