diff --git a/deps.edn b/deps.edn
index b88a7ba7..3dd253d6 100644
--- a/deps.edn
+++ b/deps.edn
@@ -138,7 +138,10 @@
                          com.github.seancorfield/expectations {:mvn/version "2.0.157"}
                          com.rpl/specter {:mvn/version "1.1.4"}
                          com.github.askonomm/clarktown {:mvn/version "1.1.2"}
-                         org.clojure/math.numeric-tower {:git/tag "math.numeric-tower-0.0.5", :git/sha "12eb9c5", :git/url "https://github.com/clojure/math.numeric-tower"}}
+                         org.clojure/math.numeric-tower {:git/tag "math.numeric-tower-0.0.5", :git/sha "12eb9c5", :git/url "https://github.com/clojure/math.numeric-tower"}
+                         prismatic/schema {:git/url "https://github.com/plumatic/schema"
+                                           :git/sha "6846dc7c3a9df5bfd718f68f183c683ce0f621ff"
+                                           :git/tag "schema-1.3.0"}}
             :classpath-overrides {org.clojure/clojure nil
                                   org.clojure/spec.alpha nil}}
            :clj-nvd
diff --git a/test-resources/lib_tests/babashka/run_all_libtests.clj b/test-resources/lib_tests/babashka/run_all_libtests.clj
index 56fcda74..72c9d8fb 100644
--- a/test-resources/lib_tests/babashka/run_all_libtests.clj
+++ b/test-resources/lib_tests/babashka/run_all_libtests.clj
@@ -1,5 +1,7 @@
 (ns babashka.run-all-libtests
-  (:require [babashka.core :refer [windows?]]
+  (:require [babashka.classpath :as cp :refer [add-classpath]]
+            [babashka.core :refer [windows?]]
+            [babashka.fs :as fs]
             [clojure.edn :as edn]
             [clojure.java.io :as io]
             [clojure.test :as t :refer [*report-counters*]]))
@@ -42,7 +44,13 @@
 
 ;; Standard test-runner for libtests
 (let [lib-tests (edn/read-string (slurp (io/resource "bb-tested-libs.edn")))]
-  (doseq [{tns :test-namespaces skip-windows :skip-windows} (vals lib-tests)]
+  (doseq [[libname {tns :test-namespaces skip-windows :skip-windows
+                    :keys [test-paths
+                           git-sha]}] lib-tests]
+    (let [git-dir (format ".gitlibs/libs/%s/%s" libname git-sha)
+          git-dir (fs/file (fs/home) git-dir)]
+      (doseq [p test-paths]
+        (add-classpath (str (fs/file git-dir p)))))
     (when-not (and skip-windows (windows?))
       (apply test-namespaces tns))))
 
diff --git a/test-resources/lib_tests/bb-tested-libs.edn b/test-resources/lib_tests/bb-tested-libs.edn
index 9cd8076e..7c46100b 100644
--- a/test-resources/lib_tests/bb-tested-libs.edn
+++ b/test-resources/lib_tests/bb-tested-libs.edn
@@ -114,4 +114,15 @@
  com.rpl/specter {:git-url "https://github.com/redplanetlabs/specter", :test-namespaces (com.rpl.specter.cljs-test-helpers com.rpl.specter.test-helpers com.rpl.specter.core-test com.rpl.specter.zipper-test), :git-sha "67e86806020b9d02fbca8cdb1efad3002fc81a32"}
  com.github.askonomm/clarktown {:git-url "https://github.com/askonomm/clarktown", :test-namespaces (clarktown.core-test clarktown.parsers.horizontal-line-block-test clarktown.parsers.italic-test clarktown.parsers.link-and-image-test clarktown.parsers.empty-block-test clarktown.parsers.inline-code-test clarktown.parsers.heading-block-test clarktown.parsers.bold-test clarktown.parsers.quote-block-test clarktown.parsers.code-block-test clarktown.parsers.strikethrough-test), :git-sha "059bfa7bd9bfdde0c75646bf1dfc20d23da8a02c"}
  org.clojure/math.numeric-tower {:git-url "https://github.com/clojure/math.numeric-tower", :test-namespaces (clojure.math.test-numeric-tower), :git-sha "97827be66f35feebc3c89ba81c546fef4adc7947"}
+ prismatic/schema {:test-namespaces [schema.core-test
+                                     schema.macros-test
+                                     schema.coerce-test
+                                     schema.experimental.abstract-map-test
+                                     schema.test-test
+                                     schema.utils-test]
+                   :git-url "https://github.com/plumatic/schema"
+                   :git-sha "6846dc7c3a9df5bfd718f68f183c683ce0f621ff"
+                   :git-tag "schema-1.3.0"
+                   ;; specify for adding tests to classpath
+                   :test-paths ["test/clj" "test/cljc"]}
 }