diff --git a/jolt-core/clojure/core/20-coll.clj b/jolt-core/clojure/core/20-coll.clj
index 0132764..27ee30e 100644
--- a/jolt-core/clojure/core/20-coll.clj
+++ b/jolt-core/clojure/core/20-coll.clj
@@ -51,3 +51,13 @@
          (let [w (first more) kw (k w)]
            (if (<= kw kv) (recur w kw (next more)) (recur v kv (next more))))
          v)))))
+
+;; Function combinators (pure HOFs).
+(defn juxt [& fs]
+  (fn [& args] (mapv (fn [f] (apply f args)) fs)))
+
+(defn every-pred [& preds]
+  (fn [& xs] (every? (fn [p] (every? p xs)) preds)))
+
+(defn some-fn [& preds]
+  (fn [& xs] (some (fn [p] (some p xs)) preds)))
diff --git a/src/jolt/core.janet b/src/jolt/core.janet
index e6ad3c3..a04b802 100644
--- a/src/jolt/core.janet
+++ b/src/jolt/core.janet
@@ -1376,11 +1376,7 @@
     (table? x) (or (get x :jolt/meta) (get x :meta))
     nil))
 
-(defn core-every-pred [& preds]
-  (fn [& xs]
-    (var ok true)
-    (each p preds (each x xs (when (not (truthy? (p x))) (set ok false))))
-    ok))
+# every-pred now lives in the Clojure collection tier (core/20-coll.clj).
 
 (def core-comp
   (fn [& fs]
@@ -1401,9 +1397,7 @@
 (defn core-partial [f & args]
   (fn [& more] (apply f (array/concat (array/slice args) more))))
 
-(defn core-juxt [& fs]
-  (fn [& args]
-    (tuple ;(map |(apply $ args) fs))))
+# juxt now lives in the Clojure collection tier (core/20-coll.clj).
 
 (defn core-memoize [f]
   (var cache @{})
@@ -3153,11 +3147,7 @@
     (each x c (array/push r (let [v (core-get smap x :jolt/nf)] (if (= v :jolt/nf) x v))))
     (tuple/slice (tuple ;r))))
 
-(defn core-some-fn [& preds]
-  (fn [& xs]
-    (var hit nil)
-    (each p preds (each x xs (when (and (nil? hit) (truthy? (p x))) (set hit (p x)))))
-    hit))
+# some-fn now lives in the Clojure collection tier (core/20-coll.clj).
 
 (defn core-sequential? [x] (or (tuple? x) (array? x) (pvec? x) (plist? x) (lazy-seq? x)))
 # Associative = maps and (real) vectors only. pvec is a literal/built vector;
@@ -3733,7 +3723,6 @@
     "keep" core-keep
     "interleave" core-interleave
     "flatten" core-flatten
-    "every-pred" core-every-pred
     "find" core-find
     "transduce" core-transduce
     "sequence" core-sequence
@@ -3756,7 +3745,6 @@
     "rseq" core-rseq
     "shuffle" core-shuffle
     "replace" core-replace
-    "some-fn" core-some-fn
     "sequential?" core-sequential?
     "associative?" core-associative?
     "ifn?" core-ifn?
@@ -3797,7 +3785,6 @@
     "complement" core-complement
     "comp" core-comp
     "partial" core-partial
-    "juxt" core-juxt
     "memoize" core-memoize
     "vector" core-vector
     "hash-map" core-hash-map
diff --git a/test/integration/clojure-test-suite-test.janet b/test/integration/clojure-test-suite-test.janet
index ac44d0a..bd1e05e 100644
--- a/test/integration/clojure-test-suite-test.janet
+++ b/test/integration/clojure-test-suite-test.janet
@@ -25,11 +25,10 @@
 # running thread (Janet OS threads can't be interrupted), so `(deref (future
 # (sleep 1)))` re-raises the unresolved-`Thread/sleep` error — a documented
 # platform gap, not a regression in any previously-working behavior.
-# Raised 3913 -> 3916 with the staged-bootstrap kernel tier: the evaluator now
-# restores current-ns when a fn throws across a try boundary (a leaked ns used to
-# break referred-symbol resolution after a caught error), and subvec's index
-# coercion (NaN/float/ratio) is faithful — net +3.
-(def baseline-pass 3916)
+# Raised 3913 -> 3916 with the staged-bootstrap kernel tier (ns-restore-on-throw
+# + faithful subvec coercion), then 3916 -> 3920 moving juxt/every-pred/some-fn to
+# Clojure (the canonical defs are more correct than the prior Janet ones).
+(def baseline-pass 3920)
 # A file is "clean" when it ran with zero failures AND zero errors.
 (def baseline-clean-files 45)
 # Per-file wall-clock budget (seconds). Normal files finish in well under 1s;