diff --git a/poky/meta/classes-recipe/pypi.bbclass b/poky/meta/classes-recipe/pypi.bbclass
index f510bfe..b8c18cc 100644
--- a/poky/meta/classes-recipe/pypi.bbclass
+++ b/poky/meta/classes-recipe/pypi.bbclass
@@ -30,7 +30,9 @@
 SRC_URI:prepend = "${PYPI_SRC_URI} "
 S = "${WORKDIR}/${PYPI_PACKAGE}-${PV}"
 
-UPSTREAM_CHECK_URI ?= "https://pypi.org/project/${PYPI_PACKAGE}/"
-UPSTREAM_CHECK_REGEX ?= "/${PYPI_PACKAGE}/(?P<pver>(\d+[\.\-_]*)+)/"
+# Replace any '_' characters in the pypi URI with '-'s to follow the PyPi website naming conventions
+UPSTREAM_CHECK_PYPI_PACKAGE ?= "${@d.getVar('PYPI_PACKAGE').replace('_', '-')}"
+UPSTREAM_CHECK_URI ?= "https://pypi.org/project/${UPSTREAM_CHECK_PYPI_PACKAGE}/"
+UPSTREAM_CHECK_REGEX ?= "/${UPSTREAM_CHECK_PYPI_PACKAGE}/(?P<pver>(\d+[\.\-_]*)+)/"
 
 CVE_PRODUCT ?= "python:${PYPI_PACKAGE}"