diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4bde60fb755567a958fb5866277f8cf082f1aed7..c0d7520f870c38b642c5b1433bbc801f57c20c4c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ v4.3.3
 ------
 **Library**:
 - Minor fix to suppress Xxt output unless `--verbose` is specified (!642)
+- Fix of DirectFull solver in case where only Neumann boundary conditions 
+  are imposed. (!655)
 
 **FieldConvert**:
 - Fix to avoid repeated import of field file (!649)