diff --git a/science/py-pyteomics/Makefile b/science/py-pyteomics/Makefile
index e9c09575801f..e41957ca2ff3 100644
--- a/science/py-pyteomics/Makefile
+++ b/science/py-pyteomics/Makefile
@@ -1,5 +1,5 @@
 PORTNAME=	pyteomics
-PORTVERSION=	4.5.5
+PORTVERSION=	4.5.6
 CATEGORIES=	science python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
diff --git a/science/py-pyteomics/distinfo b/science/py-pyteomics/distinfo
index e5e9f49ffe5d..c91f9b9649e1 100644
--- a/science/py-pyteomics/distinfo
+++ b/science/py-pyteomics/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1661599317
-SHA256 (pyteomics-4.5.5.tar.gz) = c762164d437d2d136153ce8b75235ea23cf460e7163ab69b97cd1c39f489263e
-SIZE (pyteomics-4.5.5.tar.gz) = 203943
+TIMESTAMP = 1669057945
+SHA256 (pyteomics-4.5.6.tar.gz) = 8c6e79068f18d853218967a312c22861422df69fdcf62499a258526f687b126f
+SIZE (pyteomics-4.5.6.tar.gz) = 205538