diff --git a/install.sh b/install.sh
index 7927e1d6..6921b0d5 100755
--- a/install.sh
+++ b/install.sh
@@ -139,7 +139,7 @@ fi
 echo "###########################"
 echo "##  ADDING CRYPTO LAYER ================"
 
-for i in pip setuptools wheel cryptography Ed25519 base58 google duniterpy pynacl pgpy pynentry SecureBytes amzqr pdf2docx pyppeteer; do
+for i in pip setuptools wheel cryptography Ed25519 base58 google duniterpy silkaj pynacl pgpy pynentry SecureBytes amzqr pdf2docx pyppeteer; do
         echo ">>> Installation $i <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"
         python -m pip install --break-system-packages -U $i
         [[ $? != 0 ]] && echo "INSTALL $i FAILED." && echo "python -m pip install -U $i FAILED." >> /tmp/install.errors.log && continue