diff --git a/backend/poetry.lock b/backend/poetry.lock
index b7ae42123..7872556d0 100644
--- a/backend/poetry.lock
+++ b/backend/poetry.lock
@@ -1013,13 +1013,13 @@ requests = "*"
 
 [[package]]
 name = "openpyxl"
-version = "3.0.10"
+version = "3.1.3"
 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-3.1.3-py2.py3-none-any.whl", hash = "sha256:25071b558db709de9e8782c3d3e058af3b23ffb2fc6f40c8f0c45a154eced2c3"},
+    {file = "openpyxl-3.1.3.tar.gz", hash = "sha256:8dd482e5350125b2388070bb2477927be2e8ebc27df61178709bc8c8751da2f9"},
 ]
 
 [package.dependencies]
@@ -1972,4 +1972,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.12"
-content-hash = "ea13a06e7a2583dff610379bf76be441ef69a8f6ca17d27a358297dd82e0c18c"
+content-hash = "603d25d6d46414ac6963f79bf109b5069b69070310dc684394360d1ca232782e"
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 0438c6d7a..a32e40628 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -44,7 +44,7 @@ python-redmine = "^2.5.0"
 sentry-sdk = "^2.3.1"
 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 = "3.1.3" # TODO: dependency of `pyexcel-xlsx` Remove as soon as https://github.com/pyexcel/pyexcel-xlsx/issues/52 is resolved.
 psycopg = {extras = ["binary"], version = "^3.1.19"}
 
 [tool.poetry.group.dev.dependencies]