diff --git a/bin/clj-kondo b/bin/clj-kondo
index 04bcc3c7..9d0b5460 100755
--- a/bin/clj-kondo
+++ b/bin/clj-kondo
@@ -3,7 +3,7 @@
 
 set -euo pipefail
 
-CLJ_KONDO_VERSION="2022.10.14"
+CLJ_KONDO_VERSION="2023.07.13"
 ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/../" && pwd)
 
 function ensure_clj_kondo() {
diff --git a/src/clojars/admin.clj b/src/clojars/admin.clj
index ffd6c15f..8ba11bb0 100644
--- a/src/clojars/admin.clj
+++ b/src/clojars/admin.clj
@@ -16,9 +16,9 @@
 (defn current-date-str []
   (.format (SimpleDateFormat. "yyyyMMdd") (db/get-time)))
 
-(def ^:dynamic *db*)
-(def ^:dynamic *search*)
-(def ^:dynamic *storage*)
+(def ^:dynamic *db* nil)
+(def ^:dynamic *search* nil)
+(def ^:dynamic *storage* nil)
 
 (defn backup-dir [base-dir path]
   (io/file base-dir
diff --git a/test/clojars/unit/admin_test.clj b/test/clojars/unit/admin_test.clj
index 0ba06d34..8cffcf2f 100644
--- a/test/clojars/unit/admin_test.clj
+++ b/test/clojars/unit/admin_test.clj
@@ -32,7 +32,7 @@
 (defn in-backup-somewhere? [name]
   (some #{name} (map (memfn getName) (file-seq (io/file (:deletion-backup-dir (config)))))))
 
-(def ^:dynamic *search-removals*)
+(def ^:dynamic *search-removals* nil)
 
 (defmacro with-repo-setup [& body]
   `(let [jar# (io/file (io/resource "fake.jar"))]