diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 4a2d601..1beac03 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -38,7 +38,7 @@ jobs:
             with:
                 python-version: ${{ matrix.python-version }}
           - name: Install lint dependencies
-            run: pip install flake8 pyserial
+            run: pip install flake8 pyserial intelhex
           - name: Run flake8
             run: flake8 stm32loader
     pylint:
@@ -56,6 +56,6 @@ jobs:
               with:
                   python-version: ${{ matrix.python-version }}
             - name: Install lint dependencies
-              run: pip install pylint pyserial
+              run: pip install pylint pyserial intelhex
             - name: Run pylint
               run: pylint stm32loader
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 962d996..5c23e58 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -28,6 +28,6 @@ jobs:
               with:
                   python-version: ${{ matrix.python-version }}
             - name: Install test dependencies
-              run: pip install tox tox-gh-actions pyserial pytest
+              run: pip install tox tox-gh-actions pyserial pytest intelhex
             - name: Run setup and tests as defined in tox.ini
               run: tox
diff --git a/noxfile.py b/noxfile.py
index 886a2d4..4165c20 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -22,6 +22,7 @@ def tests(session):
     # see https://github.com/pypa/setuptools/issues/1671
     rmtree("./dist", ignore_errors=True)
     session.install(".")
+    session.install("intelhex")
     session.install("pytest")
     session.chdir("tests")
     session.run("pytest", "./")
@@ -40,6 +41,7 @@ def lint(session):
     session.install("pylint")
     # pyserial for avoiding a complaint by pylint
     session.install("pyserial")
+    session.install("intelhex")
     session.run("pylint", "stm32loader")
 
     session.install("flake8", "flake8-isort")
diff --git a/tox.ini b/tox.ini
index 076b28d..5ff6b13 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,7 @@ passenv = HOME
 deps=
   pytest
   pyserial
+  intelhex
 commands=
   pytest -r a [] tests