diff --git a/requirements/runtime-constraints.in b/requirements/runtime-constraints.in
index e4afedd..3781170 100644
--- a/requirements/runtime-constraints.in
+++ b/requirements/runtime-constraints.in
@@ -13,8 +13,3 @@
 #      remain in Git.                                                         #
 #                                                                             #
 ###############################################################################
-
-# NOTE: 1.12.0 and later enable support for metadata 2.4
-# NOTE: This can be dropped once twine stops using pkginfo
-# Ref: https://github.com/pypa/twine/pull/1180
-pkginfo >= 1.12.0
diff --git a/requirements/runtime.in b/requirements/runtime.in
index 5861e0b..5c01a09 100644
--- a/requirements/runtime.in
+++ b/requirements/runtime.in
@@ -1,7 +1,7 @@
 -c runtime-constraints.in  # limits known broken versions
 
-# NOTE: v6 is needed to support metadata v2.4
-twine >= 6.0
+# NOTE: v6.1 is needed to support metadata v2.4 including PEP 639
+twine >= 6.1
 
 # NOTE: Used to detect an ambient OIDC credential for OIDC publishing,
 # NOTE: as well as PEP 740 attestations.
diff --git a/requirements/runtime.txt b/requirements/runtime.txt
index ac8be5d..9b39e76 100644
--- a/requirements/runtime.txt
+++ b/requirements/runtime.txt
@@ -38,6 +38,7 @@ id==1.4.0
     # via
     #   -r runtime.in
     #   sigstore
+    #   twine
 idna==3.7
     # via
     #   email-validator
@@ -71,10 +72,6 @@ packaging==24.1
     #   -r runtime.in
     #   pypi-attestations
     #   twine
-pkginfo==1.12.0
-    # via
-    #   -c runtime-constraints.in
-    #   twine
 platformdirs==4.2.2
     # via sigstore
 pyasn1==0.6.0
@@ -141,7 +138,7 @@ six==1.16.0
     # via python-dateutil
 tuf==5.0.0
     # via sigstore
-twine==6.0.1
+twine==6.1.0
     # via -r runtime.in
 typing-extensions==4.11.0
     # via