diff --git a/tb/axi_crossbar/Makefile b/tb/axi_crossbar/Makefile
index f3b292b..bcff12e 100644
--- a/tb/axi_crossbar/Makefile
+++ b/tb/axi_crossbar/Makefile
@@ -83,7 +83,7 @@ endif
 include $(shell cocotb-config --makefiles)/Makefile.sim
 
 $(WRAPPER).v: ../../rtl/$(DUT)_wrap.py
-	$< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
+	python3 $< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
 
 iverilog_dump.v:
 	echo 'module iverilog_dump();' > $@
diff --git a/tb/axi_crossbar/test_axi_crossbar.py b/tb/axi_crossbar/test_axi_crossbar.py
index c1730e1..9658b39 100644
--- a/tb/axi_crossbar/test_axi_crossbar.py
+++ b/tb/axi_crossbar/test_axi_crossbar.py
@@ -243,7 +243,7 @@ def test_axi_crossbar(request, s_count, m_count, data_width):
     wrapper_file = os.path.join(tests_dir, f"{wrapper}.v")
     if not os.path.exists(wrapper_file):
         subprocess.Popen(
-            [os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
+            ["python3", os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
             cwd=tests_dir
         ).wait()
 
diff --git a/tb/axi_interconnect/Makefile b/tb/axi_interconnect/Makefile
index 8034966..d063ba7 100644
--- a/tb/axi_interconnect/Makefile
+++ b/tb/axi_interconnect/Makefile
@@ -78,7 +78,7 @@ endif
 include $(shell cocotb-config --makefiles)/Makefile.sim
 
 $(WRAPPER).v: ../../rtl/$(DUT)_wrap.py
-	$< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
+	python3 $< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
 
 iverilog_dump.v:
 	echo 'module iverilog_dump();' > $@
diff --git a/tb/axi_interconnect/test_axi_interconnect.py b/tb/axi_interconnect/test_axi_interconnect.py
index 7c48d72..fbcaf64 100644
--- a/tb/axi_interconnect/test_axi_interconnect.py
+++ b/tb/axi_interconnect/test_axi_interconnect.py
@@ -237,7 +237,7 @@ def test_axi_interconnect(request, s_count, m_count, data_width):
     wrapper_file = os.path.join(tests_dir, f"{wrapper}.v")
     if not os.path.exists(wrapper_file):
         subprocess.Popen(
-            [os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
+            ["python3", os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
             cwd=tests_dir
         ).wait()
 
diff --git a/tb/axil_crossbar/Makefile b/tb/axil_crossbar/Makefile
index 20ef120..e48f495 100644
--- a/tb/axil_crossbar/Makefile
+++ b/tb/axil_crossbar/Makefile
@@ -71,7 +71,7 @@ endif
 include $(shell cocotb-config --makefiles)/Makefile.sim
 
 $(WRAPPER).v: ../../rtl/$(DUT)_wrap.py
-	$< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
+	python3 $< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
 
 iverilog_dump.v:
 	echo 'module iverilog_dump();' > $@
diff --git a/tb/axil_crossbar/test_axil_crossbar.py b/tb/axil_crossbar/test_axil_crossbar.py
index dc191b0..1b08f7e 100644
--- a/tb/axil_crossbar/test_axil_crossbar.py
+++ b/tb/axil_crossbar/test_axil_crossbar.py
@@ -224,7 +224,7 @@ def test_axil_crossbar(request, s_count, m_count, data_width):
     wrapper_file = os.path.join(tests_dir, f"{wrapper}.v")
     if not os.path.exists(wrapper_file):
         subprocess.Popen(
-            [os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
+            ["python3", os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
             cwd=tests_dir
         ).wait()
 
diff --git a/tb/axil_interconnect/Makefile b/tb/axil_interconnect/Makefile
index 8c51c9f..472cf50 100644
--- a/tb/axil_interconnect/Makefile
+++ b/tb/axil_interconnect/Makefile
@@ -66,7 +66,7 @@ endif
 include $(shell cocotb-config --makefiles)/Makefile.sim
 
 $(WRAPPER).v: ../../rtl/$(DUT)_wrap.py
-	$< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
+	python3 $< -p $(PARAM_S_COUNT) $(PARAM_M_COUNT)
 
 iverilog_dump.v:
 	echo 'module iverilog_dump();' > $@
diff --git a/tb/axil_interconnect/test_axil_interconnect.py b/tb/axil_interconnect/test_axil_interconnect.py
index 77670b8..6955c61 100644
--- a/tb/axil_interconnect/test_axil_interconnect.py
+++ b/tb/axil_interconnect/test_axil_interconnect.py
@@ -224,7 +224,7 @@ def test_axil_interconnect(request, s_count, m_count, data_width):
     wrapper_file = os.path.join(tests_dir, f"{wrapper}.v")
     if not os.path.exists(wrapper_file):
         subprocess.Popen(
-            [os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
+            ["python3", os.path.join(rtl_dir, f"{dut}_wrap.py"), "-p", f"{s_count}", f"{m_count}"],
             cwd=tests_dir
         ).wait()