diff --git a/docs/installation.rst b/docs/installation.rst
index 857e7d085..693cb613b 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -276,7 +276,7 @@ Cygwin
 
 Use the Cygwin installer to install the dependencies::
 
-    python3 python3-devel python3-setuptools
+    python3 python3-devel libcrypt-devel python3-setuptools
     binutils gcc-g++
     libopenssl openssl-devel
     git make openssh