diff --git a/process b/process
index eba04e6c..3559a706 160000
--- a/process
+++ b/process
@@ -1 +1 @@
-Subproject commit eba04e6c35814296e5bb383804f801aee912cba1
+Subproject commit 3559a70686e435504b1bed320d2e513c5bf2bb15
diff --git a/script/postgresql_test b/script/postgresql_test
index 70a8f37f..42dc024d 100755
--- a/script/postgresql_test
+++ b/script/postgresql_test
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
 
-BABASHKA_FEATURE_JDBC=true
-BABASHKA_FEATURE_POSTGRESQL=true
+export BABASHKA_FEATURE_JDBC=true
+export BABASHKA_FEATURE_POSTGRESQL=true
 lein test :only babashka.postgresql-test
diff --git a/src/babashka/impl/tasks.clj b/src/babashka/impl/tasks.clj
index 537b8499..e2bca478 100644
--- a/src/babashka/impl/tasks.clj
+++ b/src/babashka/impl/tasks.clj
@@ -61,7 +61,12 @@
    :shutdown p/destroy-tree})
 
 (defn shell [cmd & args]
-  (let [[opts cmd args]
+  (let [[prev cmd args]
+        (if (and (map? cmd)
+                 (:proc cmd))
+          [cmd (first args) (rest args)]
+          [nil cmd args])
+        [opts cmd args]
         (if (map? cmd)
           [cmd (first args) (rest args)]
           [nil cmd args])
@@ -75,6 +80,9 @@
                  (update opts :err io/file)
                  opts)
                opts)
+        opts (if prev
+               (assoc opts :in nil)
+               opts)
         cmd (if (.exists (io/file cmd))
               [cmd]
               (p/tokenize cmd))
@@ -82,7 +90,7 @@
         local-log-level (:log-level opts)]
     (sci/binding [log-level (or local-log-level @log-level)]
       (apply log-info cmd)
-      (handle-non-zero (p/process cmd (merge default-opts opts)) opts))))
+      (handle-non-zero (p/process prev cmd (merge default-opts opts)) opts))))
 
 (defn clojure [cmd & args]
   (let [[opts cmd args]
diff --git a/test/babashka/bb_edn_test.clj b/test/babashka/bb_edn_test.clj
index e7ae0856..0a0005cb 100644
--- a/test/babashka/bb_edn_test.clj
+++ b/test/babashka/bb_edn_test.clj
@@ -196,6 +196,13 @@
     (test-utils/with-config '{:tasks {b (System/getProperty "babashka.task")}}
       (let [s (bb "run" "--prn" "b")]
         (is (= "b" s)))))
+  (testing "shell pipe test"
+    (test-utils/with-config '{:tasks {a (-> (shell {:out :string}
+                                                   "echo hello")
+                                            (shell {:out :string} "cat")
+                                            :out)}}
+      (let [s (bb "run" "--prn" "a")]
+        (is (= "hello\n" s)))))
 
   (deftest list-tasks-test
     (test-utils/with-config {}