diff --git a/project.clj b/project.clj
index 76b35d9..1729ead 100644
--- a/project.clj
+++ b/project.clj
@@ -5,13 +5,12 @@
   :license      {:name "MIT License"
                  :url "http://opensource.org/licenses/MIT"}
 
-  :dependencies [[org.clojure/tools.logging "0.3.1"]
-                 [prismatic/plumbing "0.5.3"]]
+  :dependencies [[org.clojure/tools.logging "1.2.4"]]
 
   :profiles     {:provided
-                 {:dependencies [[org.clojure/clojure "1.8.0"]]}
+                 {:dependencies [[org.clojure/clojure "1.10.3"]]}
 
                  :test
-                 {:dependencies [[pjstadig/humane-test-output "0.8.0"]]
+                 {:dependencies [[pjstadig/humane-test-output "0.11.0"]]
                   :injections   [(require 'pjstadig.humane-test-output)
                                  (pjstadig.humane-test-output/activate!)]}})
diff --git a/src/views/core.clj b/src/views/core.clj
index bd9a583..11b5581 100644
--- a/src/views/core.clj
+++ b/src/views/core.clj
@@ -4,7 +4,6 @@
     (clojure.lang Atom))
   (:require
     [views.protocols :refer [IView id data relevant?]]
-    [plumbing.core :refer [swap-pair!]]
     [clojure.tools.logging :refer [info debug error trace]]))
 
 ;; The view-system data structure has this shape:
@@ -222,7 +221,7 @@
 
 (defn- pop-hints!
   [^Atom view-system]
-  (let [p (swap-pair! view-system assoc :hints #{})]
+  (let [p (swap-vals! view-system assoc :hints #{})]
     (or (:hints (first p)) #{})))
 
 (defn refresh-views!