diff --git a/deps/kff-cpp-api b/deps/kff-cpp-api
index c490ddb603..469ecbd861 160000
--- a/deps/kff-cpp-api
+++ b/deps/kff-cpp-api
@@ -1 +1 @@
-Subproject commit c490ddb603074b0c4c3efecc3a3c8506b059ffaf
+Subproject commit 469ecbd861ae811360b866d452354af4f8f4033d
diff --git a/deps/sublinear-Li-Stephens b/deps/sublinear-Li-Stephens
index 4efb2f3933..241001025d 160000
--- a/deps/sublinear-Li-Stephens
+++ b/deps/sublinear-Li-Stephens
@@ -1 +1 @@
-Subproject commit 4efb2f3933ea8c684fe289e8f07f626f0747436e
+Subproject commit 241001025d7cf516c0c9577f94e858e76560269f
diff --git a/src/main.cpp b/src/main.cpp
index 514f8b8976..7d9587f216 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -75,7 +75,7 @@ int main(int argc, char *argv[]) {
         vg_help(argv);
         return 1;
     }
-    
+
     auto* subcommand = vg::subcommand::Subcommand::get(argc, argv);
     if (subcommand != nullptr) {
         // We found a matching subcommand, so run it
@@ -85,7 +85,12 @@ int main(int argc, char *argv[]) {
         return (*subcommand)(argc, argv);
     } else {
         // No subcommand found
-        string command = argv[1];
+        string command;
+        // note: doing argv[1] = string is producing totally bizarre "error: inlining failed in call to ‘always_inline’ ..."
+        // error when upgrading to Ubuntu 24.04.1 / GCC 13.2.  Doing the base-by-base copy seems to work around it...
+        for (size_t i = 0; i < strlen(argv[1]); ++i) {
+            command += argv[1][i];
+        }
         cerr << "error:[vg] command " << command << " not found" << endl;
         vg_help(argv);
         return 1;
diff --git a/src/multipath_mapper.cpp b/src/multipath_mapper.cpp
index 23e52a7c25..fe7aa3b436 100644
--- a/src/multipath_mapper.cpp
+++ b/src/multipath_mapper.cpp
@@ -1836,8 +1836,10 @@ namespace vg {
                     std::swap(rescued_secondaries[i], rescued_secondaries[end - 1]);
                     std::swap(rescued_distances[i], rescued_distances[end - 1]);
                     std::swap(rescued_multiplicities[i], rescued_multiplicities[end - 1]);
-                    std::swap(duplicate[i], duplicate[end - 1]);
-                    
+                    // nb: cant std::swap bool vectors in new c++
+                    bool dupe_i = duplicate[i];
+                    duplicate[i] = duplicate[end - 1];
+                    duplicate[end - 1] = dupe_i;
                     end--;
                 }
                 else {