diff --git a/pkgs/tools/networking/linkchecker/default.nix b/pkgs/tools/networking/linkchecker/default.nix
index ea96ab94037..05da924c47e 100644
--- a/pkgs/tools/networking/linkchecker/default.nix
+++ b/pkgs/tools/networking/linkchecker/default.nix
@@ -19,6 +19,7 @@ buildPythonApplication rec {
     ConfigArgParse
     argcomplete
     beautifulsoup4
+    pyopenssl
     dnspython
     pyxdg
     requests