diff --git a/.decent_ci-Linux.yaml b/.decent_ci-Linux.yaml
index 28de42f0898..5e2ad156e5d 100644
--- a/.decent_ci-Linux.yaml
+++ b/.decent_ci-Linux.yaml
@@ -1,13 +1,14 @@
 compilers:
   - name: "gcc"
-    version: "11.4"
+    version: "13.2"
     cmake_extra_flags: -DLINK_WITH_PYTHON:BOOL=ON -DPYTHON_CLI:BOOL=OFF -DPython_REQUIRED_VERSION:STRING=3.12.2 -DPython_ROOT_DIR:PATH=~/.pyenv/versions/3.12.2/ -DBUILD_FORTRAN:BOOL=ON -DBUILD_TESTING:BOOL=ON -DENABLE_GTEST_DEBUG_MODE:BOOL=OFF -DBUILD_PERFORMANCE_TESTS:BOOL=ON -DVALGRIND_ANALYZE_PERFORMANCE_TESTS:BOOL=ON -DENABLE_PCH:BOOL=OFF
     collect_performance_results: true
     skip_regression: true
     s3_upload_bucket: energyplus
+    num_parallel_builds: 18
 
   - name: "gcc"
-    version: "11.4"
+    version: "13.2"
     build_type: RelWithDebInfo
     cmake_extra_flags: -DLINK_WITH_PYTHON:BOOL=ON -DPYTHON_CLI:BOOL=OFF -DPython_REQUIRED_VERSION:STRING=3.12.2 -DPython_ROOT_DIR:PATH=~/.pyenv/versions/3.12.2/ -DBUILD_FORTRAN:BOOL=ON -DBUILD_TESTING:BOOL=ON -DENABLE_REGRESSION_TESTING:BOOL=OFF -DCOMMIT_SHA:STRING=$COMMIT_SHA -DENABLE_COVERAGE:BOOL=ON -DENABLE_GTEST_DEBUG_MODE:BOOL=OFF -DENABLE_PCH:BOOL=OFF
     coverage_enabled: true
@@ -19,9 +20,10 @@ compilers:
     ctest_filter: -E "integration.*"
     skip_regression: true
     skip_packaging: true
+    num_parallel_builds: 18
 
   - name: "gcc"
-    version: "11.4"
+    version: "13.2"
     build_type: RelWithDebInfo
     cmake_extra_flags: -DLINK_WITH_PYTHON:BOOL=ON -DPYTHON_CLI:BOOL=OFF -DPython_REQUIRED_VERSION:STRING=3.12.2 -DPython_ROOT_DIR:PATH=~/.pyenv/versions/3.12.2/ -DBUILD_FORTRAN:BOOL=ON -DBUILD_TESTING:BOOL=ON -DENABLE_REGRESSION_TESTING:BOOL=OFF -DCOMMIT_SHA:STRING=$COMMIT_SHA -DENABLE_COVERAGE:BOOL=ON -DENABLE_GTEST_DEBUG_MODE:BOOL=OFF -DENABLE_PCH:BOOL=OFF
     coverage_enabled: true
@@ -33,3 +35,4 @@ compilers:
     ctest_filter: -R "integration.*"
     skip_regression: true
     skip_packaging: true
+    num_parallel_builds: 18
diff --git a/.decent_ci.yaml b/.decent_ci.yaml
index 011ef0a2485..a80d9aee629 100644
--- a/.decent_ci.yaml
+++ b/.decent_ci.yaml
@@ -2,7 +2,7 @@ results_repository : Myoldmopar/EnergyPlusBuildResults
 results_path : _posts
 results_base_url : https://myoldmopar.github.io/EnergyPlusBuildResults
 regression_repository : NREL/EnergyPlusRegressionTool
-regression_branch : BumpToBoto3 # this is the branch of NREL/EnergyPlusRegressionTool to use (usually main)
+regression_branch : main # this is the branch of NREL/EnergyPlusRegressionTool to use (usually main)
 regression_baseline_default : develop # this is the NREL/EnergyPlus branch to use as the baseline for regressions
 regression_baseline_develop : ""
 regression_baseline_master : ""
diff --git a/third_party/fmt-8.0.1/include/fmt/format.h b/third_party/fmt-8.0.1/include/fmt/format.h
index 82ddb407d09..2b886a1be63 100644
--- a/third_party/fmt-8.0.1/include/fmt/format.h
+++ b/third_party/fmt-8.0.1/include/fmt/format.h
@@ -316,8 +316,10 @@ template <> constexpr auto num_bits<fallback_uintptr>() -> int {
 
 FMT_INLINE void assume(bool condition) {
   (void)condition;
-#if FMT_HAS_BUILTIN(__builtin_assume)
+#if FMT_HAS_BUILTIN(__builtin_assume) && !FMT_ICC_VERSION
   __builtin_assume(condition);
+#elif FMT_GCC_VERSION
+  if (!condition) __builtin_unreachable();
 #endif
 }
 
@@ -751,8 +753,18 @@ void basic_memory_buffer<T, SIZE, Allocator>::grow(size_t size) {
   T* new_data =
       std::allocator_traits<Allocator>::allocate(alloc_, new_capacity);
   // The following code doesn't throw, so the raw pointer above doesn't leak.
-  std::uninitialized_copy(old_data, old_data + this->size(),
-                          detail::make_checked(new_data, new_capacity));
+  // std::uninitialized_copy(old_data, old_data + this->size(),
+  //                         detail::make_checked(new_data, new_capacity));
+  // ****** MYOLDMOPAR MANUAL EDIT
+  // I manually applied some of the changes from this commit
+  // https://github.com/fmtlib/fmt/commit/fb97cb2318dd14b5c791699232e1e73782be7e57
+  // Because of a GCC 13 false positive issuing a string overflow warning
+  // fmt issue: https://github.com/fmtlib/fmt/issues/3533
+  // upstream report: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109717
+  // An updated FMT version could mute this with the FMT_SYSTEM_HEADERS CMake flag turned on, but it seems fmt-8.0.1 doesn't respond to that
+  detail::assume(this->size() <= new_capacity);
+  std::uninitialized_copy_n(old_data, this->size(), new_data);
+  // ******
   this->set(new_data, new_capacity);
   // deallocate must not throw according to the standard, but even if it does,
   // the buffer already uses the new storage and will deallocate it in