diff --git a/src/jolt/core.janet b/src/jolt/core.janet
index f0bdf37..de5cb06 100644
--- a/src/jolt/core.janet
+++ b/src/jolt/core.janet
@@ -1276,6 +1276,7 @@
     "println" core-println
     "pr" core-pr
     "prn" core-prn
+    "pr-str" core-pr-str
     # Array primitives (for persistent data structures)
     "alength" core-alength
     "aget" core-aget