diff --git a/gtsam/hybrid/GaussianMixture.cpp b/gtsam/hybrid/GaussianMixture.cpp
index 04f3f2afb..546d0200b 100644
--- a/gtsam/hybrid/GaussianMixture.cpp
+++ b/gtsam/hybrid/GaussianMixture.cpp
@@ -208,9 +208,9 @@ std::shared_ptr<GaussianMixtureFactor> GaussianMixture::likelihood(
           gfg.push_back(likelihood_m);
           Vector c(1);
           c << std::sqrt(2.0 * Cgm_Kgcm);
-          auto constantFactor = boost::make_shared<JacobianFactor>(c);
+          auto constantFactor = std::make_shared<JacobianFactor>(c);
           gfg.push_back(constantFactor);
-          return boost::make_shared<JacobianFactor>(gfg);
+          return std::make_shared<JacobianFactor>(gfg);
         }
       });
   return std::make_shared<GaussianMixtureFactor>(
diff --git a/gtsam/hybrid/HybridNonlinearFactorGraph.h b/gtsam/hybrid/HybridNonlinearFactorGraph.h
index 0db8cafd2..89b4fb391 100644
--- a/gtsam/hybrid/HybridNonlinearFactorGraph.h
+++ b/gtsam/hybrid/HybridNonlinearFactorGraph.h
@@ -74,7 +74,7 @@ class GTSAM_EXPORT HybridNonlinearFactorGraph : public HybridFactorGraph {
    * @param continuousValues: Dictionary of continuous values.
    * @return HybridGaussianFactorGraph::shared_ptr
    */
-  boost::shared_ptr<HybridGaussianFactorGraph> linearize(
+  std::shared_ptr<HybridGaussianFactorGraph> linearize(
       const Values& continuousValues) const;
   /// @}
 };
diff --git a/gtsam/hybrid/tests/testGaussianMixture.cpp b/gtsam/hybrid/tests/testGaussianMixture.cpp
index 7a4439e21..f15c06165 100644
--- a/gtsam/hybrid/tests/testGaussianMixture.cpp
+++ b/gtsam/hybrid/tests/testGaussianMixture.cpp
@@ -185,7 +185,7 @@ TEST(GaussianMixture, Likelihood2) {
   {
     // We have a JacobianFactor
     const auto gf1 = (*likelihood)(assignment1);
-    const auto jf1 = boost::dynamic_pointer_cast<JacobianFactor>(gf1);
+    const auto jf1 = std::dynamic_pointer_cast<JacobianFactor>(gf1);
     CHECK(jf1);
 
     // It has 2 rows, not 1!