diff --git a/news/202110201529.bugfix b/news/202110201529.bugfix
new file mode 100644
index 0000000..27f82ad
--- /dev/null
+++ b/news/202110201529.bugfix
@@ -0,0 +1 @@
+Fix dependency versions
diff --git a/setup.py b/setup.py
index e5a1900..f393556 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,12 @@
     description="Code snippet extraction for documentation",
     keywords="documentation-generator documentation-tool snippet-generator snippet project-management documentation",
     include_package_data=True,
-    install_requires=["python-dotenv", "toml", "pystache", "mbed-tools-lib"],
+    install_requires=[
+        "toml==0.10.2",
+        "python-dotenv==0.19.1",
+        "pystache==0.5.4 ",
+        "mbed-tools-lib==1.2.0",
+    ],
     license="Apache 2.0",
     long_description_content_type="text/markdown",
     long_description=long_description,