diff --git a/README.md b/README.md
index 137db76..5939793 100644
--- a/README.md
+++ b/README.md
@@ -78,9 +78,6 @@ OUTPUT_DIR="data"
 # maximum execution time (s) to terminate the calculation (default: 900s = 15min, 0 = no limit)
 # MAX_EXETIME=0
 
-# maximum number of pointings to be considered (default: 200, 0 = no limit)
-# MAX_NPPC=100
-
 # email setting (email will be sent at each submission)
 # EMAIL_FROM=
 # EMAIL_TO=
@@ -101,4 +98,8 @@ ANN_FILE="user_announcement.md"
 # SQLite database file to be used for the duplication check of upload_id
 # The file will be created under $OUTPUT_DIR
 UPLOADID_DB="upload_id.sqlite"
+
+# loggging level
+# DEBUG, INFO (default), WARNING, ERROR, or CRITICAL
+LOG_LEVEL="INFO"
 ```
diff --git a/docs/docs/developer.md b/docs/docs/developer.md
index 3e95811..a74129e 100644
--- a/docs/docs/developer.md
+++ b/docs/docs/developer.md
@@ -86,9 +86,6 @@ OUTPUT_DIR="data"
 # maximum execution time (s) to terminate the calculation (default: 900s = 15min, 0 = no limit)
 # MAX_EXETIME=0
 
-# maximum number of pointings to be considered (default: 200, 0 = no limit)
-# MAX_NPPC=100
-
 # email setting (email will be sent at each submission)
 # EMAIL_FROM=
 # EMAIL_TO=
@@ -109,4 +106,8 @@ ANN_FILE="user_announcement.md"
 # SQLite database file to be used for the duplication check of upload_id
 # The file will be created under $OUTPUT_DIR
 UPLOADID_DB="upload_id.sqlite"
+
+# loggging level
+# DEBUG, INFO (default), WARNING, ERROR, or CRITICAL
+LOG_LEVEL="INFO"
 ```
diff --git a/pyproject.toml b/pyproject.toml
index bce7cdc..ab6e443 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,6 +37,7 @@ dependencies = [
     "ets-fiber-assigner @ git+https://github.com/Subaru-PFS/ets_fiberalloc.git",
     "ics-cobraOps @ git+https://github.com/Subaru-PFS/ics_cobraOps.git",
     "pfs-utils @ git+https://github.com/Subaru-PFS/pfs_utils.git",
+    "psutil>=6.0.0",
 ]
 requires-python = ">=3.10,<3.13"
 readme = "README.md"