diff --git a/requirements.txt b/requirements.txt
index 420ec19..1194424 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 matrix-nio[e2e]==0.24.0
-pyyaml
-markdown
-python-olm
+pyyaml==6.0.1
+markdown==3.6
+python-olm==3.2.16
 openai==1.16.2
 anthropic==0.23.1
 mergedeep==1.3.4