diff --git a/plutus-core/changelog.d/20240503_135941_Yuriy.Lazaryev_strictify_fix.md b/plutus-core/changelog.d/20240503_135941_Yuriy.Lazaryev_strictify_fix.md
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+++ b/plutus-core/changelog.d/20240503_135941_Yuriy.Lazaryev_strictify_fix.md
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+### Fixed
+
+- A "stricter" version of `Z`-combinator that allows certain PIR programs not to lose their traces
+and yields minor performance gains.
+