diff --git a/opto/optimizers/optoprime.py b/opto/optimizers/optoprime.py
index 13548494..351e590b 100644
--- a/opto/optimizers/optoprime.py
+++ b/opto/optimizers/optoprime.py
@@ -349,7 +349,7 @@ def repr_node_constraint(node_dict):
                     temp_list.append(f"(code) {k}: {v[1]}")
         return "\n".join(temp_list)
 
-    def probelm_instance(self, summary, mask=None):
+    def problem_instance(self, summary, mask=None):
         mask = mask or []
         return ProblemInstance(
             instruction=self.objective if '#Instruction' not in mask else "",
@@ -369,7 +369,7 @@ def construct_prompt(self, summary, mask=None, *args, **kwargs):
         """Construct the system and user prompt."""
         system_prompt = self.representation_prompt + self.output_format_prompt  # generic representation + output rule
         user_prompt = self.user_prompt_template.format(
-            problem_instance=str(self.probelm_instance(summary, mask=mask))
+            problem_instance=str(self.problem_instance(summary, mask=mask))
         )  # problem instance
         if self.include_example:
             user_prompt = (
@@ -429,7 +429,7 @@ def _step(self, verbose=False, mask=None, *args, **kwargs) -> Dict[ParameterNode
 
         if self.log is not None:
             self.log.append({"system_prompt": system_prompt, "user_prompt": user_prompt, "response": response})
-            self.summary_log.append({'problem_instance': self.probelm_instance(summary), 'summary': summary})
+            self.summary_log.append({'problem_instance': self.problem_instance(summary), 'summary': summary})
 
         return update_dict
 
diff --git a/opto/version.py b/opto/version.py
index d1f2e39a..48fef323 100644
--- a/opto/version.py
+++ b/opto/version.py
@@ -1 +1 @@
-__version__ = "0.1.1"
\ No newline at end of file
+__version__ = "0.1.2"
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 6f4adafd..5f15139a 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
 
 
 install_requires = [
-    "pyautogen>=0.2.31",
+    "autogen-agentchat~=0.2",
     "graphviz>=0.20.1",
     "scikit-learn",
     "xgboost",