diff --git a/.certs/russian_trusted_ca_bundle.pem b/.certs/russian_trusted_ca_bundle.pem
new file mode 100644
index 0000000..9f1c4e0
--- /dev/null
+++ b/.certs/russian_trusted_ca_bundle.pem
@@ -0,0 +1,145 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+ 2 s:C=RU, O=The Ministry of Digital Development and Communications, CN=Russian Trusted Sub CA
+   i:C=RU, O=The Ministry of Digital Development and Communications, CN=Russian Trusted Root CA
+   a:PKEY: RSA, 4096 (bit); sigalg: sha256WithRSAEncryption
+   v:NotBefore: Mar  2 11:25:19 2022 GMT; NotAfter: Mar  6 11:25:19 2027 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+ 3 s:C=RU, O=The Ministry of Digital Development and Communications, CN=Russian Trusted Root CA
+   i:C=RU, O=The Ministry of Digital Development and Communications, CN=Russian Trusted Root CA
+   a:PKEY: RSA, 4096 (bit); sigalg: sha256WithRSAEncryption
+   v:NotBefore: Mar  1 21:04:15 2022 GMT; NotAfter: Feb 27 21:04:15 2032 GMT
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+---
+Server certificate
+subject=C=RU, ST=Moscow, L=Moscow, O=Public Joint-Stock Company Sberbank of Russia, OU=IT, CN=smartspeech.sber.ru
+issuer=C=RU, O=The Ministry of Digital Development and Communications, CN=Russian Trusted Sub CA
+---
+No client certificate CA names sent
+Peer signing digest: SHA256
+Peer signature type: rsa_pss_rsae_sha256
+Peer Temp Key: X25519, 253 bits
+---
+SSL handshake has read 7717 bytes and written 1614 bytes
+Verification: OK
+---
+New, TLSv1.3, Cipher is TLS_AES_128_GCM_SHA256
+Protocol: TLSv1.3
+Server public key is 2048 bit
+This TLS version forbids renegotiation.
+Compression: NONE
+Expansion: NONE
+No ALPN negotiated
+Early data was not sent
+Verify return code: 0 (ok)
+---
+DONE