diff --git a/README.md b/README.md
index 0044926..6b23f91 100644
--- a/README.md
+++ b/README.md
@@ -103,7 +103,7 @@ This supplemental licensing supersedes any language in the generic license attac
 none of this supplemental license applies to you.
 
 # Releases
-  * 1.3.3 - Isolation for pip too so that it doesn't bind to the parent pip.
+  * 1.3.4 - Isolation for pip too so that it doesn't bind to the parent pip.
   * 1.3.1 - New `full_isolation` mode to allow packages installed on other parts of the system from binding.
   * 1.3.1 - Update readme.
   * 1.3.0 - Marks a new interface.
diff --git a/pyproject.toml b/pyproject.toml
index 3f777a8..152968c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ dependencies = [
     "setuptools",
 ]
 # Change this with the version number bump.
-version = "1.3.3"
+version = "1.3.4"
 
 [tool.ruff]
 line-length = 200
diff --git a/src/isolated_environment/api.py b/src/isolated_environment/api.py
index 2bcb7dc..e47e3cc 100644
--- a/src/isolated_environment/api.py
+++ b/src/isolated_environment/api.py
@@ -239,14 +239,24 @@ def run(self, cmd_list: list[str], **kwargs) -> subprocess.CompletedProcess:
         text = kwargs.get("text", universal_newlines)
         if "text" in kwargs:
             del kwargs["text"]
-        if cmd_list and (
-            cmd_list[0] == "python"
-            or cmd_list[0] == "python.exe"
-            or cmd_list[0] == "python3"
+        if (
+            cmd_list
+            and self.full_isolation
+            and (
+                cmd_list[0] == "python"
+                or cmd_list[0] == "python.exe"
+                or cmd_list[0] == "python3"
+            )
         ):
             cmd_list[0] = str(act_env.python)
-        if cmd_list and (
-            cmd_list[0] == "pip" or cmd_list[0] == "pip.exe" or cmd_list[0] == "pip3"
+        if (
+            cmd_list
+            and self.full_isolation
+            and (
+                cmd_list[0] == "pip"
+                or cmd_list[0] == "pip.exe"
+                or cmd_list[0] == "pip3"
+            )
         ):
             cmd_list[0] = str(act_env.pip)
         cp = subprocess.run(