diff --git a/src/containerapp/HISTORY.rst b/src/containerapp/HISTORY.rst
index 53d69b0627a..8028f198e8b 100644
--- a/src/containerapp/HISTORY.rst
+++ b/src/containerapp/HISTORY.rst
@@ -4,6 +4,7 @@ Release History
 ===============
 upcoming
 ++++++
+* 'az containerapp session code-interpreter execute': Extend maximum supported value of `--timeout-in-seconds` from 60 to 180.
 
 1.2.0b1
 ++++++
diff --git a/src/containerapp/azext_containerapp/_params.py b/src/containerapp/azext_containerapp/_params.py
index 693edd74c38..913ed02eb45 100644
--- a/src/containerapp/azext_containerapp/_params.py
+++ b/src/containerapp/azext_containerapp/_params.py
@@ -483,7 +483,7 @@ def load_arguments(self, _):
 
     with self.argument_context('containerapp session code-interpreter', arg_group='execute') as c:
         c.argument('code', help="The code to execute in the code interpreter session")
-        c.argument('timeout_in_seconds', type=int, validator=validate_timeout_in_seconds, default=60, help="Duration in seconds code in session can run prior to timing out 0 - 60 secs, e.g. 30")
+        c.argument('timeout_in_seconds', type=int, validator=validate_timeout_in_seconds, default=60, help="Duration in seconds code in session can run prior to timing out 0 - 180 secs, e.g. 30")
 
     with self.argument_context('containerapp java logger') as c:
         c.argument('logger_name', help="The logger name.")
diff --git a/src/containerapp/azext_containerapp/_validators.py b/src/containerapp/azext_containerapp/_validators.py
index 3244c82e9d0..f416c33185b 100644
--- a/src/containerapp/azext_containerapp/_validators.py
+++ b/src/containerapp/azext_containerapp/_validators.py
@@ -219,8 +219,8 @@ def validate_target_port_range(cmd, namespace):
 def validate_timeout_in_seconds(cmd, namespace):
     timeout_in_seconds = namespace.timeout_in_seconds
     if timeout_in_seconds is not None:
-        if timeout_in_seconds < 0 or timeout_in_seconds > 60:
-            raise ValidationError("timeout in seconds must be in range [0, 60].")
+        if timeout_in_seconds < 0 or timeout_in_seconds > 180:
+            raise ValidationError("timeout in seconds must be in range [0, 180].")
 
 
 def validate_debug(cmd, namespace):