diff --git a/packages/techdocs-container/techdocs-core/README.md b/packages/techdocs-container/techdocs-core/README.md
index a4afed0158..164fca0b34 100644
--- a/packages/techdocs-container/techdocs-core/README.md
+++ b/packages/techdocs-container/techdocs-core/README.md
@@ -50,6 +50,11 @@ python -m black src/
 
 ## Changelog
 
+
+### 0.0.5
+
+- Downgrade some versions of markdown extensions to versions that are more stable
+
 ### 0.0.4
 
 - Added support for more mkdocs extensions
diff --git a/packages/techdocs-container/techdocs-core/requirements.txt b/packages/techdocs-container/techdocs-core/requirements.txt
index 4037a174ea..fcf007531d 100644
--- a/packages/techdocs-container/techdocs-core/requirements.txt
+++ b/packages/techdocs-container/techdocs-core/requirements.txt
@@ -4,10 +4,10 @@
 mkdocs==1.1.2
 mkdocs-material==5.3.2
 mkdocs-monorepo-plugin==0.4.5
-plantuml-markdown==3.4.0
+plantuml-markdown==3.1.2
 markdown_inline_graphviz_extension==1.1
 pygments==2.6.1
-pymdown-extensions==7.1
+pymdown-extensions==6.3.0
 
 # The linter using for Python
 # Note: This requires Python 3.6+ to run, but can format Python 2 code too.
diff --git a/packages/techdocs-container/techdocs-core/setup.py b/packages/techdocs-container/techdocs-core/setup.py
index 72593dc433..fc695ec9fb 100644
--- a/packages/techdocs-container/techdocs-core/setup.py
+++ b/packages/techdocs-container/techdocs-core/setup.py
@@ -18,7 +18,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='mkdocs-techdocs-core',
-    version='0.0.4',
+    version='0.0.5',
     description='A Mkdocs package that contains TechDocs defaults',
     long_description='',
     keywords='mkdocs',
@@ -31,10 +31,10 @@ setup(
         'mkdocs>=1.1.2',
         'mkdocs-material==5.3.2',
         'mkdocs-monorepo-plugin==0.4.5',
-        'plantuml-markdown==3.4.0',
+        'plantuml-markdown==3.1.2',
         'markdown_inline_graphviz_extension==1.1',
         'pygments==2.6.1',
-        'pymdown-extensions==7.1'
+        'pymdown-extensions==6.3.0'
     ],
     classifiers=[
         'Development Status :: 1 - Planning',