diff --git a/poetry.lock b/poetry.lock
index 28c7ae2..3db961a 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -248,6 +248,17 @@ tomli = {version = "*", optional = true, markers = "python_full_version <= \"3.1
 [package.extras]
 toml = ["tomli"]
 
+[[package]]
+name = "defusedxml"
+version = "0.7.1"
+description = "XML bomb protection for Python stdlib modules"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+files = [
+    {file = "defusedxml-0.7.1-py2.py3-none-any.whl", hash = "sha256:a352e7e428770286cc899e2542b6cdaedb2b4953ff269a210103ec58f6198a61"},
+    {file = "defusedxml-0.7.1.tar.gz", hash = "sha256:1bb3032db185915b62d7c6209c5a8792be6a32ab2fedacc84e01b52c51aa3e69"},
+]
+
 [[package]]
 name = "exceptiongroup"
 version = "1.2.0"
@@ -626,4 +637,4 @@ zstd = ["zstandard (>=0.18.0)"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "c739a33c6bf7c33c51070f1ac4dca3f0eccc1b2bd78685aede4cfd5241a93ff8"
+content-hash = "823fa9ed31419cf5ad8d392d019a31c0ccbc440bd0e51d45fc34da665790f535"
diff --git a/print-coverage.py b/print-coverage.py
index 16a7ed2..be0dcdb 100644
--- a/print-coverage.py
+++ b/print-coverage.py
@@ -1,15 +1,15 @@
-# Prints code testing coverage as percentage for badge generation.
-import xml.etree.ElementTree as et
-
-tree = et.parse("cov.xml")
-root = tree.getroot()
-coverage = float(root.attrib["line-rate"]) * 100
-print(f"COVERAGE={coverage:3.4}%")
-if coverage >= 95.0:
-    print("COVERAGE_COLOR=green")
-elif coverage >= 90.0:
-    print("COVERAGE_COLOR=yellow")
-elif coverage >= 85.0:
-    print("COVERAGE_COLOR=orange")
-else:
-    print("COVERAGE_COLOR=red")
+# Prints code testing coverage as percentage for badge generation.
+from defusedxml.ElementTree import parse
+
+tree = parse("cov.xml")
+root = tree.getroot()
+coverage = float(root.attrib["line-rate"]) * 100
+print(f"COVERAGE={coverage:3.4}%")
+if coverage >= 95.0:
+    print("COVERAGE_COLOR=green")
+elif coverage >= 90.0:
+    print("COVERAGE_COLOR=yellow")
+elif coverage >= 85.0:
+    print("COVERAGE_COLOR=orange")
+else:
+    print("COVERAGE_COLOR=red")
diff --git a/pyproject.toml b/pyproject.toml
index 43886e2..91b5484 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,11 +16,12 @@ pysigma = "^0.11"
 
 [tool.poetry.dev-dependencies]
 black = "^24.1"
+defusedxml = "^0.7"
 
 [tool.poetry.group.dev.dependencies]
+coverage = "^7.4"
 pytest = "^8.0"
 pytest-cov = "^4.1"
-coverage = "^7.4"
 
 [build-system]
 requires = ["poetry-core>=1.8.1"]