diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4913b8d5..77ca4fb95 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,11 @@ Classify the change according to the following categories:
     ##### Removed
     ### Patches
 
+## v3.6.1
+### Minor Updates
+#### Fixed
+- See updates from REopt.jl v0.43.0: https://github.com/NREL/REopt.jl/pull/364
+
 ## v3.6.0
 ### Minor Updates
 #### Changed 
diff --git a/julia_src/Manifest.toml b/julia_src/Manifest.toml
index a96b8f997..6f45d8d7c 100644
--- a/julia_src/Manifest.toml
+++ b/julia_src/Manifest.toml
@@ -841,9 +841,9 @@ uuid = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
 
 [[deps.REopt]]
 deps = ["ArchGDAL", "CSV", "CoolProp", "DataFrames", "Dates", "DelimitedFiles", "HTTP", "JLD", "JSON", "JuMP", "LinDistFlow", "LinearAlgebra", "Logging", "MathOptInterface", "Requires", "Roots", "Statistics", "TestEnv"]
-git-tree-sha1 = "81145461bcc15162ef468858d62b41357bb13684"
+git-tree-sha1 = "d7bdc0d314e0821a8904ba204265345aab1ee8bc"
 uuid = "d36ad4e8-d74a-4f7a-ace1-eaea049febf6"
-version = "0.41.0"
+version = "0.43.0"
 
 [[deps.Random]]
 deps = ["SHA", "Serialization"]
diff --git a/reoptjl/api.py b/reoptjl/api.py
index 93e5087cb..40d347292 100644
--- a/reoptjl/api.py
+++ b/reoptjl/api.py
@@ -108,7 +108,7 @@ def obj_create(self, bundle, **kwargs):
         meta = {
             "run_uuid": run_uuid,
             "api_version": 3,
-            "reopt_version": "0.41.0",
+            "reopt_version": "0.43.0",
             "status": "Validating..."
         }
         bundle.data.update({"APIMeta": meta})
diff --git a/reoptjl/test/test_http_endpoints.py b/reoptjl/test/test_http_endpoints.py
index a4a1eeb47..b8dca3fbd 100644
--- a/reoptjl/test/test_http_endpoints.py
+++ b/reoptjl/test/test_http_endpoints.py
@@ -109,7 +109,7 @@ def test_steamturbine_defaults(self):
         # Check the endpoint logic with the expected selection
         self.assertEqual(http_response["prime_mover"], "steam_turbine")
         self.assertEqual(http_response["size_class"], 1)
-        self.assertGreater(http_response["chp_size_based_on_avg_heating_load_kw"], 574.419)
+        self.assertGreater(http_response["chp_elec_size_heuristic_kw"], 574.419)
 
     def test_absorption_chiller_defaults(self):