diff --git a/backend/poetry.lock b/backend/poetry.lock
index 509577d3c..368f2143c 100644
--- a/backend/poetry.lock
+++ b/backend/poetry.lock
@@ -962,13 +962,13 @@ requests = "*"
 
 [[package]]
 name = "openpyxl"
-version = "3.0.10"
+version = "3.1.2"
 description = "A Python library to read/write Excel 2010 xlsx/xlsm files"
 optional = false
 python-versions = ">=3.6"
 files = [
-    {file = "openpyxl-3.0.10-py2.py3-none-any.whl", hash = "sha256:0ab6d25d01799f97a9464630abacbb34aafecdcaa0ef3cba6d6b3499867d0355"},
-    {file = "openpyxl-3.0.10.tar.gz", hash = "sha256:e47805627aebcf860edb4edf7987b1309c1b3632f3750538ed962bbcc3bd7449"},
+    {file = "openpyxl-3.1.2-py2.py3-none-any.whl", hash = "sha256:f91456ead12ab3c6c2e9491cf33ba6d08357d802192379bb482f1033ade496f5"},
+    {file = "openpyxl-3.1.2.tar.gz", hash = "sha256:a6f5977418eff3b2d5500d54d9db50c8277a368436f4e4f8ddb1be3422870184"},
 ]
 
 [package.dependencies]
@@ -1987,4 +1987,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "aea51de2bf2220300eb5876ce4a9feb8994b3429666a464b21b624596b7c1909"
+content-hash = "6e7d34585948617dbc00c42d005ad6933b8fd07f254986ad1a3eab92523c9067"
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 86fda11c8..07f562d9a 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -44,7 +44,7 @@ python-redmine = "^2.5.0"
 sentry-sdk = "^1.45.0"
 whitenoise = "^6.6.0"
 django-hurricane = "^1.5.0"
-openpyxl = "3.0.10" # TODO: dependency of `pyexcel-xlsx` Remove as soon as https://github.com/pyexcel/pyexcel-xlsx/issues/52 is resolved.
+openpyxl = "3.1.2" # TODO: dependency of `pyexcel-xlsx` Remove as soon as https://github.com/pyexcel/pyexcel-xlsx/issues/52 is resolved.
 psycopg = {extras = ["binary"], version = "^3.1.18"}
 
 [tool.poetry.group.dev.dependencies]