diff --git a/deps/cpypp b/deps/cpypp
index ee9c6e7..d9c6813 160000
--- a/deps/cpypp
+++ b/deps/cpypp
@@ -1 +1 @@
-Subproject commit ee9c6e7c4bcd4579c7b5a58a4c7626630f8c8ffd
+Subproject commit d9c68139eac3dca1175d61bbfb3a696bf1ad39db
diff --git a/deps/fbitset b/deps/fbitset
index 7d18fd7..3dcd9b2 160000
--- a/deps/fbitset
+++ b/deps/fbitset
@@ -1 +1 @@
-Subproject commit 7d18fd739a932d7fc9836431b10df71148fca8b4
+Subproject commit 3dcd9b2348cb72a11d861fdca202cd84ac263af7
diff --git a/deps/libparenth b/deps/libparenth
index 2093109..ca06bc3 160000
--- a/deps/libparenth
+++ b/deps/libparenth
@@ -1 +1 @@
-Subproject commit 2093109496f7be6c6ceda06ce66f1835c09d4531
+Subproject commit ca06bc3274cb1f604e00482cd51c759e60272571
diff --git a/gristmill/_parenth.cpp b/gristmill/_parenth.cpp
index 4c24945..b5618b0 100644
--- a/gristmill/_parenth.cpp
+++ b/gristmill/_parenth.cpp
@@ -241,7 +241,7 @@ static PyObject* parenth_func(PyObject* self, PyObject* args)
         for (auto& factor : factors_inp) {
             factors.emplace_back();
             for (auto& i : factor) {
-                factors.back().push_back(i.as<long>());
+                factors.back().push_back(i.as<size_t>());
             }
         }