diff --git a/sci b/sci
index 0da67e32..a92fce09 160000
--- a/sci
+++ b/sci
@@ -1 +1 @@
-Subproject commit 0da67e32e2930aa0ea18c9350b8a40fc0b9cb502
+Subproject commit a92fce09210f47a8243a30e6d4a0a6febca21c27
diff --git a/src/babashka/main.clj b/src/babashka/main.clj
index 6d8ee62d..ea6b2e16 100644
--- a/src/babashka/main.clj
+++ b/src/babashka/main.clj
@@ -32,6 +32,7 @@
    [clojure.string :as str]
    [sci.addons :as addons]
    [sci.core :as sci]
+   [sci.impl.namespaces :as sci-namespaces]
    [sci.impl.unrestrict :refer [*unrestricted*]]
    [sci.impl.vars :as vars])
   (:gen-class))
@@ -479,11 +480,18 @@ If neither -e, -f, or --socket-repl are specified, then the first argument that
                           (System/getenv "BABASHKA_CLASSPATH"))
             _ (when classpath
                 (add-classpath* classpath))
-            load-fn (fn [{:keys [:namespace]}]
-                      (when-let [{:keys [:loader]} @cp-state]
-                        (let [res (cp/source-for-namespace loader namespace nil)]
-                          (when uberscript (swap! uberscript-sources conj (:source res)))
-                          res)))
+            load-fn (fn [{:keys [:namespace :reload]}]
+                      (when-let [{:keys [:loader]}
+                                  @cp-state]
+                        (if ;; ignore built-in namespaces when uberscripting, unless with :reload
+                            (and uberscript
+                                 (not reload)
+                                 (or (contains? namespaces namespace)
+                                     (contains? sci-namespaces/namespaces namespace)))
+                          ""
+                          (let [res (cp/source-for-namespace loader namespace nil)]
+                            (when uberscript (swap! uberscript-sources conj (:source res)))
+                            res))))
             _ (when file
                 (let [abs-path (.getAbsolutePath (io/file file))]
                   (vars/bindRoot sci/file abs-path)
@@ -516,8 +524,7 @@ If neither -e, -f, or --socket-repl are specified, then the first argument that
                   :classes classes/class-map
                   :imports imports
                   :load-fn load-fn
-                  :dry-run uberscript
-                  :reload true
+                  :uberscript uberscript
                   :readers core/data-readers}
             opts (addons/future opts)
             sci-ctx (sci/init opts)
diff --git a/test-resources/babashka/uberscript/src/my/impl.clj b/test-resources/babashka/uberscript/src/my/impl.clj
new file mode 100644
index 00000000..0dfd77e7
--- /dev/null
+++ b/test-resources/babashka/uberscript/src/my/impl.clj
@@ -0,0 +1,6 @@
+(ns my.impl
+  (:require [clojure.string]))
+
+(defn impl-fn
+  "identity"
+  [x] x)
diff --git a/test-resources/babashka/uberscript/src/my/impl2.clj b/test-resources/babashka/uberscript/src/my/impl2.clj
new file mode 100644
index 00000000..d5483e20
--- /dev/null
+++ b/test-resources/babashka/uberscript/src/my/impl2.clj
@@ -0,0 +1,4 @@
+(ns my.impl2
+  (:require [my.impl :as impl]))
+
+(def impl-fn impl/impl-fn)
diff --git a/test-resources/babashka/uberscript/src/my/main.clj b/test-resources/babashka/uberscript/src/my/main.clj
new file mode 100644
index 00000000..ea0b6d59
--- /dev/null
+++ b/test-resources/babashka/uberscript/src/my/main.clj
@@ -0,0 +1,6 @@
+(ns my.main
+  (:require [my.impl :as impl])
+  (:require [my.impl2 :as impl2]))
+
+(defn -main [& args]
+  (impl/impl-fn args))
diff --git a/test/babashka/classpath_test.clj b/test/babashka/classpath_test.clj
index 0e4c363e..618f2d8d 100644
--- a/test/babashka/classpath_test.clj
+++ b/test/babashka/classpath_test.clj
@@ -39,7 +39,12 @@
     (.deleteOnExit tmp-file)
     (is (empty? (tu/bb nil "--classpath" "test-resources/babashka/src_for_classpath_test" "-m" "my.main" "--uberscript" (.getPath tmp-file))))
     (is (= "(\"1\" \"2\" \"3\" \"4\")\n"
-           (tu/bb nil "--file" (.getPath tmp-file) "1" "2" "3" "4")))))
+           (tu/bb nil "--file" (.getPath tmp-file) "1" "2" "3" "4")))
+    (testing "order of namespaces is correct"
+      (tu/bb nil "--classpath" "test-resources/babashka/uberscript/src" "-m" "my.main" "--uberscript" (.getPath tmp-file))
+      (prn (slurp (.getPath tmp-file)))
+      (is (= "(\"1\" \"2\" \"3\" \"4\")\n"
+             (tu/bb nil "--file" (.getPath tmp-file) "1" "2" "3" "4"))))))
 
 (deftest error-while-loading-test
   (is (true?