diff --git a/pkgs/by-name/sn/snapcraft/package.nix b/pkgs/by-name/sn/snapcraft/package.nix
index d4fad21c4c4e..de6d5b213dd4 100644
--- a/pkgs/by-name/sn/snapcraft/package.nix
+++ b/pkgs/by-name/sn/snapcraft/package.nix
@@ -7,6 +7,7 @@
   nix-update-script,
   python3Packages,
   squashfsTools,
+  cacert,
   stdenv,
   writableTmpDirAsHomeHook,
 }:
@@ -118,6 +119,11 @@ python3Packages.buildPythonApplication rec {
     wrapProgram $out/bin/snapcraft --prefix PATH : ${squashfsTools}/bin
   '';
 
+  preCheck = ''
+    # _pygit2.GitError: OpenSSL error: failed to load certificates: error:00000000:lib(0)::reason(0)
+    export SSL_CERT_FILE=${cacert}/etc/ssl/certs/ca-bundle.crt
+  '';
+
   nativeCheckInputs =
     with python3Packages;
     [