diff --git a/docs/source/rtd-req.txt b/docs/source/rtd-req.txt
index 5e73d14..b2c7f11 100644
--- a/docs/source/rtd-req.txt
+++ b/docs/source/rtd-req.txt
@@ -5,6 +5,6 @@ pandas
 requests
 sqlalchemy
 psycopg2
-Sphinx==5.1.1
+Sphinx==5.2.1
 sphinx-copybutton==0.5.0
 sphinx-rtd-theme==1.0.0
diff --git a/pyhelpers/data/metadata.json b/pyhelpers/data/metadata.json
index 2f97ba6..4d223de 100644
--- a/pyhelpers/data/metadata.json
+++ b/pyhelpers/data/metadata.json
@@ -5,7 +5,7 @@
     "Affiliation": "Birmingham Centre for Railway Research and Education, School of Engineering, University of Birmingham",
     "Email": "q.fu@bham.ac.uk",
     "Description": "An open-source toolkit for facilitating Python users' data manipulation tasks.",
-    "Version": "1.4.2",
+    "Version": "1.4.3rc1",
     "License": "GPLv3+",
     "First release": "September 2019"
 }
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index f157207..dd4cabe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,21 +1,22 @@
+atomicwrites==1.4.1
 build==0.8.0
 fuzzywuzzy==0.18.0
 gdal==3.4.3
 jupyter==1.0.0
-jupyterlab==3.4.5
+jupyterlab==3.4.7
 matplotlib==3.5.3
 networkx==2.8.6
 nltk==3.7
 openpyxl==3.0.10
 orjson==3.8.0
-pandas==1.4.3
+pandas==1.5.0
 pdfkit==1.0.0
 pip-chill==1.0.1
 psycopg2==2.9.3
 pyarrow==9.0.0
 pyodbc==4.0.34
-pypandoc==1.8.1
-pyproj==3.3.1
+pypandoc==1.9
+pyproj==3.4.0
 pytest-cov==3.0.0
 python-levenshtein==0.12.2
 python-rapidjson==1.8
@@ -24,9 +25,9 @@ scikit-learn==1.1.2
 shapely==1.8.4
 sphinx-copybutton==0.5.0
 sphinx-rtd-theme==1.0.0
-sqlalchemy==1.4.40
+sqlalchemy==1.4.41
 twine==4.0.1
-ujson==5.4.0
+ujson==5.5.0
 xlrd==2.0.1
 xlsx2csv==0.8.0
 xlsxwriter==3.0.3