diff --git a/tests/e2e/cli/test_issue_commands_e2e.py b/tests/e2e/cli/test_issue_commands_e2e.py
index 6102d22f..2ee9e8ee 100644
--- a/tests/e2e/cli/test_issue_commands_e2e.py
+++ b/tests/e2e/cli/test_issue_commands_e2e.py
@@ -11,6 +11,7 @@ Demonstrates:
 import pytest
 import subprocess
 import json
+import sys
 from pathlib import Path
 import time
 import os
@@ -26,7 +27,7 @@ class TestIssueCommandsE2E:
         """Test basic issue show command."""
         # Act
         result = subprocess.run(
-            ["python", "tddai_cli.py", "show-issue", "23"],
+            [sys.executable, "tddai_cli.py", "show-issue", "23"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -41,7 +42,7 @@ class TestIssueCommandsE2E:
         """Test show issue command with invalid issue number."""
         # Act
         result = subprocess.run(
-            ["python", "tddai_cli.py", "show-issue", "99999"],
+            [sys.executable, "tddai_cli.py", "show-issue", "99999"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -56,7 +57,7 @@ class TestIssueCommandsE2E:
         """Test workspace status command."""
         # Act
         result = subprocess.run(
-            ["python", "tddai_cli.py", "workspace-status"],
+            [sys.executable, "tddai_cli.py", "workspace-status"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -76,7 +77,7 @@ class TestIssueCommandsE2E:
 
         # Step 1: Check initial workspace status
         result = subprocess.run(
-            ["python", "tddai_cli.py", "workspace-status"],
+            [sys.executable, "tddai_cli.py", "workspace-status"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -86,7 +87,7 @@ class TestIssueCommandsE2E:
 
         # Step 2: Start working on an issue
         result = subprocess.run(
-            ["python", "tddai_cli.py", "start-issue", "42"],
+            [sys.executable, "tddai_cli.py", "start-issue", "42"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -103,7 +104,7 @@ class TestIssueCommandsE2E:
 
         # Step 3: Check workspace status again
         result = subprocess.run(
-            ["python", "tddai_cli.py", "workspace-status"],
+            [sys.executable, "tddai_cli.py", "workspace-status"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -113,7 +114,7 @@ class TestIssueCommandsE2E:
 
         # Step 4: Try to finish (cleanup)
         result = subprocess.run(
-            ["python", "tddai_cli.py", "finish-issue"],
+            [sys.executable, "tddai_cli.py", "finish-issue"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -128,7 +129,7 @@ class TestIssueCommandsE2E:
         """Test listing open issues."""
         # Act
         result = subprocess.run(
-            ["python", "tddai_cli.py", "list-open-issues"],
+            [sys.executable, "tddai_cli.py", "list-open-issues"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -145,7 +146,7 @@ class TestIssueCommandsE2E:
         """Test CLI help functionality."""
         # Test main help
         result = subprocess.run(
-            ["python", "tddai_cli.py", "--help"],
+            [sys.executable, "tddai_cli.py", "--help"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -157,7 +158,7 @@ class TestIssueCommandsE2E:
 
         # Test specific command help
         result = subprocess.run(
-            ["python", "tddai_cli.py", "show-issue", "--help"],
+            [sys.executable, "tddai_cli.py", "show-issue", "--help"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -170,7 +171,7 @@ class TestIssueCommandsE2E:
         """Test CLI behavior with invalid command."""
         # Act
         result = subprocess.run(
-            ["python", "tddai_cli.py", "invalid-command"],
+            [sys.executable, "tddai_cli.py", "invalid-command"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -185,7 +186,7 @@ class TestIssueCommandsE2E:
         """Test CLI error handling for various scenarios."""
         # Test with missing required argument
         result = subprocess.run(
-            ["python", "tddai_cli.py", "show-issue"],  # Missing issue number
+            [sys.executable, "tddai_cli.py", "show-issue"],  # Missing issue number
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -201,7 +202,7 @@ class TestIssueCommandsE2E:
         """Test show issue command with multiple issue numbers."""
         # Act
         result = subprocess.run(
-            ["python", "tddai_cli.py", "show-issue", issue_number],
+            [sys.executable, "tddai_cli.py", "show-issue", issue_number],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -218,7 +219,7 @@ class TestIssueCommandsE2E:
         # Act
         performance_timer.start()
         result = subprocess.run(
-            ["python", "tddai_cli.py", "workspace-status"],
+            [sys.executable, "tddai_cli.py", "workspace-status"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -235,7 +236,7 @@ class TestIssueCommandsE2E:
         """Test CLI output formatting and structure."""
         # Test workspace status output
         result = subprocess.run(
-            ["python", "tddai_cli.py", "workspace-status"],
+            [sys.executable, "tddai_cli.py", "workspace-status"],
             env=isolated_environment,
             capture_output=True,
             text=True,
@@ -267,7 +268,7 @@ class TestIssueCommandsE2E:
 
         # Act
         result = subprocess.run(
-            ["python", "tddai_cli.py", "workspace-status"],
+            [sys.executable, "tddai_cli.py", "workspace-status"],
             env=full_env,
             capture_output=True,
             text=True,
@@ -300,9 +301,9 @@ class TestIssueCommandsE2E:
 
         # Start multiple commands concurrently
         commands = [
-            ["python", "tddai_cli.py", "workspace-status"],
-            ["python", "tddai_cli.py", "show-issue", "1"],
-            ["python", "tddai_cli.py", "show-issue", "2"],
+            [sys.executable, "tddai_cli.py", "workspace-status"],
+            [sys.executable, "tddai_cli.py", "show-issue", "1"],
+            [sys.executable, "tddai_cli.py", "show-issue", "2"],
         ]
 
         threads = []
@@ -335,7 +336,7 @@ class TestIssueCommandsE2E:
 
         # Test basic command execution
         result = subprocess.run(
-            ["python", "tddai_cli.py", "--help"],
+            [sys.executable, "tddai_cli.py", "--help"],
             env=isolated_environment,
             capture_output=True,
             text=True,