diff --git a/sci b/sci
index fd0cb735..a8ee100a 160000
--- a/sci
+++ b/sci
@@ -1 +1 @@
-Subproject commit fd0cb735c8b332ec4c6603e7da8b69c01be96fad
+Subproject commit a8ee100a5508aaecf39b945d813430266e4419b8
diff --git a/src/babashka/impl/clojure/core.clj b/src/babashka/impl/clojure/core.clj
index 5eefdcf8..917b8f01 100644
--- a/src/babashka/impl/clojure/core.clj
+++ b/src/babashka/impl/clojure/core.clj
@@ -171,7 +171,6 @@
    '*source-path* sci/file
    'with-precision (sci/copy-var with-precision clojure-core-ns)
    '-with-precision (sci/copy-var -with-precision clojure-core-ns)
-   'volatile? (sci/copy-var volatile? clojure-core-ns)
    ;; STM
    'alter (sci/copy-var alter clojure-core-ns)
    'commute (sci/copy-var commute clojure-core-ns)