diff --git a/seqs/matrix.sh b/seqs/matrix.sh
index 1aeb97e..5ba3957 100755
--- a/seqs/matrix.sh
+++ b/seqs/matrix.sh
@@ -102,7 +102,9 @@ step_4() {
   enableErrorCheck
   exe pip install --upgrade pip
   exe pip install --upgrade setuptools
-  exe pip install matrix-synapse[postgres,lxml,psycopg2,hiredis,txredisapi] #lxml psycopg2
+  # bcrypt and cryptography last version before requiring rust to compile
+  # hiredis and txredisapi needed by redis
+  exe pip install bcrypt==3.2.2 cryptography==37.0.4 matrix-synapse[postgres] lxml psycopg2 hiredis txredisapi
 }
 
 step_5_info() { echo "Create default configuration and folder structure"; }