diff --git a/resources/META-INF/babashka/deps.edn b/resources/META-INF/babashka/deps.edn
index 1b4183bf..a55ffa90 100644
--- a/resources/META-INF/babashka/deps.edn
+++ b/resources/META-INF/babashka/deps.edn
@@ -32,7 +32,7 @@
         cheshire/cheshire {:mvn/version "5.11.0"}
         org.clojure/data.xml {:mvn/version "0.2.0-alpha8"}
         clj-commons/clj-yaml {:mvn/version "0.7.169"}
-        com.cognitect/transit-clj {:mvn/version "1.0.329"}
+        com.cognitect/transit-clj {:mvn/version "1.0.333"}
         org.clojure/test.check {:mvn/version "1.1.1"}
         nrepl/bencode {:mvn/version "1.1.0"}
         seancorfield/next.jdbc {:mvn/version "1.1.610"}
diff --git a/src/babashka/impl/classes.clj b/src/babashka/impl/classes.clj
index c6710e71..e1a7bd35 100644
--- a/src/babashka/impl/classes.clj
+++ b/src/babashka/impl/classes.clj
@@ -210,6 +210,7 @@
     java.net.http.WebSocket$Builder
     java.net.http.WebSocket$Listener
     java.security.cert.X509Certificate
+    java.security.cert.CertificateFactory
     javax.crypto.Cipher
     javax.crypto.Mac
     javax.crypto.SecretKey
@@ -696,6 +697,8 @@
                          javax.crypto.SecretKey
                          (instance? java.lang.Thread v)
                          java.lang.Thread
+                         (instance? java.security.cert.X509Certificate v)
+                         java.security.cert.X509Certificate
                          ;; keep commas for merge friendliness
                          ,,,)))
         m (assoc m (list 'quote 'clojure.lang.Var) 'sci.lang.Var)
diff --git a/test-resources/certificate.crt b/test-resources/certificate.crt
new file mode 100644
index 00000000..ee544493
--- /dev/null
+++ b/test-resources/certificate.crt
@@ -0,0 +1,34 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/test/babashka/interop_test.clj b/test/babashka/interop_test.clj
index 1574091f..c32b875a 100644
--- a/test/babashka/interop_test.clj
+++ b/test/babashka/interop_test.clj
@@ -27,3 +27,17 @@
   (is (true? (bb nil "(= (first {1 2})
                          (clojure.lang.MapEntry. 1 2)
                          (clojure.lang.MapEntry/create 1 2))"))))
+
+(deftest X509Certificate-test
+  (is (true? (bb nil "(import java.security.cert.X509Certificate)
+(import java.security.cert.CertificateFactory)
+(require '[clojure.java.io :as io])
+(defn x509-certificate
+  ^X509Certificate
+  [f]
+  (let [input   (io/input-stream f)
+        factory (CertificateFactory/getInstance \"X.509\")]
+    (.generateCertificate factory input)))
+(def cert (x509-certificate (io/file \"test-resources/certificate.crt\")))
+(some? (.getSubjectX500Principal cert))
+"))))