diff --git a/deps.edn b/deps.edn
index 4126102b..dcf461a2 100644
--- a/deps.edn
+++ b/deps.edn
@@ -73,7 +73,8 @@
                          circleci/bond {:mvn/version "0.4.0"}
                          version-clj/version-clj {:mvn/version "2.0.1"}
                          gaka/gaka {:mvn/version "0.3.0"}
-                         failjure/failjure {:mvn/version "2.1.1"}}
+                         failjure/failjure {:mvn/version "2.1.1"}
+                         io.helins/binf {:mvn/version "1.1.0-beta0"}}
             :classpath-overrides {org.clojure/clojure nil
                                   org.clojure/spec.alpha nil
                                   org.clojure/core.specs.alpha nil}}
diff --git a/src/babashka/impl/classes.clj b/src/babashka/impl/classes.clj
index 2fa14d92..6974a324 100644
--- a/src/babashka/impl/classes.clj
+++ b/src/babashka/impl/classes.clj
@@ -309,7 +309,8 @@
                       clojure.lang.Volatile
                       java.util.List
                       java.util.Iterator
-                      java.util.Map$Entry]
+                      java.util.Map$Entry
+                      java.nio.DirectByteBuffer]
     :custom ~custom-map})
 
 (defmacro gen-class-map []
diff --git a/test-resources/lib_tests/babashka/run_all_libtests.clj b/test-resources/lib_tests/babashka/run_all_libtests.clj
index 9154f989..d720b436 100644
--- a/test-resources/lib_tests/babashka/run_all_libtests.clj
+++ b/test-resources/lib_tests/babashka/run_all_libtests.clj
@@ -196,6 +196,8 @@
                  'rewrite-clj.zip.subedit-test
                  'rewrite-clj.node.coercer-test)
 
+(test-namespaces 'helins.binf.test)
+
 ;;;; final exit code
 
 (let [{:keys [:test :fail :error] :as m} @status]