diff --git a/common.mk b/common.mk
index e1120061ac..7f1b9669c4 100644
--- a/common.mk
+++ b/common.mk
@@ -218,6 +218,7 @@ $(TOP_MODS_FILELIST) $(MODEL_MODS_FILELIST) $(ALL_MODS_FILELIST) $(BB_MODS_FILEL
 		--model-hier-json $(MFC_MODEL_HRCHY_JSON) \
 		--top-hier-json $(MFC_TOP_HRCHY_JSON) \
 		--in-all-filelist $(MFC_FILELIST) \
+		--in-bb-filelist $(MFC_BB_MODS_FILELIST) \
 		--dut $(TOP) \
 		--model $(MODEL) \
 		--target-dir $(GEN_COLLATERAL_DIR) \
diff --git a/conda-reqs/circt.json b/conda-reqs/circt.json
index 1eb54a4391..020fe373a3 100644
--- a/conda-reqs/circt.json
+++ b/conda-reqs/circt.json
@@ -1,3 +1,3 @@
 {
-  "version": "firtool-1.66.0"
+  "version": "firtool-1.75.0"
 }
diff --git a/scripts/uniquify-module-names.py b/scripts/uniquify-module-names.py
index d2131c33e2..5c6a9613fb 100755
--- a/scripts/uniquify-module-names.py
+++ b/scripts/uniquify-module-names.py
@@ -11,6 +11,7 @@
 parser.add_argument("--model-hier-json", type=str, required=True, help="Path to hierarchy JSON emitted by firtool. Must include DUT as a module.")
 parser.add_argument("--top-hier-json", type=str, required=True, help="Path to hierarchy JSON emitted by firtool. Must include DUT as a module.")
 parser.add_argument('--in-all-filelist', type=str, required=True, help='Path to input filelist that has all modules (relative paths).')
+parser.add_argument('--in-bb-filelist', type=str, required=True, help='Path to input blackbox filelist')
 parser.add_argument("--dut", type=str, required=True, help="Name of the DUT module.")
 parser.add_argument("--model", type=str, required=True, help="Name of the Model module.")
 parser.add_argument('--out-dut-filelist', type=str, required=True, help='Path to output filelist including all modules under the DUT.')
@@ -57,8 +58,8 @@ def get_modules_in_verilog_file(file):
         module_names.append(words[1].replace("(", "").replace(")", "").replace(";", ""))
   return module_names
 
-def get_modules_in_filelist(verilog_module_filename, cc_filelist):
-  with open(args.in_all_filelist) as fl:
+def get_modules_in_filelist(filelist, verilog_module_filename, cc_filelist):
+  with open(filelist) as fl:
     lines = fl.readlines()
     for line in lines:
       path = line.strip()
@@ -186,7 +187,8 @@ def uniquify_modules_under_model(modules_under_model, common_modules, verilog_mo
 def main():
   verilog_module_filename = dict()
   cc_filelist = list()
-  get_modules_in_filelist(verilog_module_filename, cc_filelist)
+  get_modules_in_filelist(args.in_all_filelist, verilog_module_filename, cc_filelist)
+  get_modules_in_filelist(args.in_bb_filelist , verilog_module_filename, cc_filelist)
 
   modules_under_model = get_modules_under_hier(args.model_hier_json, args.dut)
   modules_under_top   = get_modules_under_hier(args.top_hier_json)
diff --git a/tools/circt b/tools/circt
index 9e0c1696f3..481cb60add 160000
--- a/tools/circt
+++ b/tools/circt
@@ -1 +1 @@
-Subproject commit 9e0c1696f3caef4059c65774ad6b8efee91d9d9e
+Subproject commit 481cb60add7358934414a3c6b396f5d29ad934fe