diff --git a/pyproject.toml b/pyproject.toml
index bcdb866b3..fad467dca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ dependencies = [
     "yaspin",
     # see: https://stackoverflow.com/questions/76175487/sudden-importerror-cannot-import-name-appengine-from-requests-packages-urlli
     "appengine-python-standard",
-    "kfp==2.9.0", # Cap kfp for protobuff compatibility
+    "kfp==2.9.0", # Cap kfp for protobuf compatibility
     "kfp-kubernetes>=1.0.0",
     "pygithub",
     "black>=22.8.0",
@@ -96,7 +96,7 @@ airflow-gitlab = [
     "python-gitlab"
 ]
 kfp = [
-    "kfp==2.9.0", # Cap kfp for protobuff compatibility
+    "kfp==2.9.0", # Cap kfp for protobuf compatibility
     "typing-extensions>=3.10,<5",  # Cap from kfp
     "mistune<3.1.0",
     "kfp-kubernetes>=1.0.0",
@@ -106,7 +106,7 @@ kfp-examples = [
 ]
 # The following is a collection of "non-test" extra dependencies from above.
 all = [
-    "kfp==2.9.0", # Cap kfp for protobuff compatibility
+    "kfp==2.9.0", # Cap kfp for protobuf compatibility
     "kfp-kubernetes>=1.0.0",
     "elyra-examples-kfp-catalog",
     "python-gitlab",