diff --git a/.gitignore b/.gitignore
index b5cf81da..893aeb51 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,3 +38,4 @@ target
 .DS_Store
 .portal
 default.iprof
+scratch.clj
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7515fb7..420d6bc8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,8 @@ A preview of the next release can be installed from
 
 ## Unreleased
 
+- Upgrade Clojure to `1.12.0`
+- [#1720](https://github.com/babashka/babashka/issues/1720): Include `clojure.java.process`
 -  [#1598](https://github.com/babashka/babashka/issues/1598): use Rosetta on CircleCI to build x64 images
 - Bump SCI
 - Bump `fs`
diff --git a/README.md b/README.md
index 058d7fc2..f855706a 100644
--- a/README.md
+++ b/README.md
@@ -40,10 +40,10 @@ As one user described it:
 ## Quickstart
 
 For installation options check [Installation](https://github.com/babashka/babashka#installation).
-For quick installation use:
+For quick installation using `bash`, use:
 
 ``` shell
-$ bash < <(curl -s https://raw.githubusercontent.com/babashka/babashka/master/install)
+bash < <(curl -s https://raw.githubusercontent.com/babashka/babashka/master/install)
 ```
 
 or grab a binary from [Github
@@ -53,9 +53,12 @@ anywhere on the path.
 Then you're ready to go:
 
 ``` shellsession
-$ ls | bb -i '(filter fs/directory? *input*)'
-("doc" "resources" "sci" "script" "src" "target" "test")
-bb took 4ms.
+time bb -e '(->> (fs/list-dir ".") (filter fs/directory?) (map fs/normalize) (map str) (take 3))'
+```
+
+``` clojure
+(".build" "feature-lanterna" ".repl")
+bb -e    0,01s  user 0,01s system 70% cpu 0,017 total
 ```
 
 ## Support :heart:
@@ -120,46 +123,6 @@ by Daniel Higginbotham, who has also helped a lot of people learn Clojure with
 [Clojure for the Brave and
 True](https://www.braveclojure.com/clojure-for-the-brave-and-true/).
 
-## Examples
-
-Read the output from a shell command as a lazy seq of strings:
-
-``` shell
-$ ls | bb -i '(take 2 *input*)'
-("CHANGES.md" "Dockerfile")
-```
-
-Read EDN from stdin and write the result to stdout:
-
-``` shell
-$ bb '(vec (dedupe *input*))' <<< '[1 1 1 1 2]'
-[1 2]
-```
-
-Read more about `*input*` and in- and output flags
-[here](https://book.babashka.org/#_input_and_output_flags).
-
-Execute a script. E.g. print the current time in California using the
-`java.time` API:
-
-File `pst.clj`:
-``` clojure
-#!/usr/bin/env bb
-
-(def now (java.time.ZonedDateTime/now))
-(def LA-timezone (java.time.ZoneId/of "America/Los_Angeles"))
-(def LA-time (.withZoneSameInstant now LA-timezone))
-(def pattern (java.time.format.DateTimeFormatter/ofPattern "HH:mm"))
-(println (.format LA-time pattern))
-```
-
-``` shell
-$ bb pst.clj
-05:17
-```
-
-More examples can be found [here](examples/README.md).
-
 ## Try online
 
 You can try babashka online with Nextjournal's babashka [notebook
diff --git a/deps.edn b/deps.edn
index 2f3a49c4..6efcc2d1 100644
--- a/deps.edn
+++ b/deps.edn
@@ -18,7 +18,7 @@
          "deps.clj/src" "deps.clj/resources"
          "resources" "sci/resources"
          "impl-java/src"],
- :deps {org.clojure/clojure {:mvn/version "1.11.2"},
+ :deps {org.clojure/clojure {:mvn/version "1.12.0"},
         org.babashka/sci {:local/root "sci"}
         org.babashka/babashka.impl.java {:mvn/version "0.1.8"}
         org.babashka/sci.impl.types {:mvn/version "0.0.2"}
diff --git a/fs b/fs
index 11121ded..99d6a3b2 160000
--- a/fs
+++ b/fs
@@ -1 +1 @@
-Subproject commit 11121dedba416e93ce1eb69674c78f269a1f3e0a
+Subproject commit 99d6a3b2f55b851a6949ed6eee31412b299dcf01
diff --git a/project.clj b/project.clj
index 3754fa36..bc8a5e7e 100644
--- a/project.clj
+++ b/project.clj
@@ -21,8 +21,8 @@
                    :non-flaky (complement :flaky)
                    :flaky :flaky}
   :jvm-opts ["--enable-preview"]
-  :dependencies [[org.clojure/clojure "1.11.2"]
-                 [borkdude/edamame "1.4.24"]
+  :dependencies [[org.clojure/clojure "1.12.0"]
+                 [borkdude/edamame "1.4.27"]
                  [borkdude/graal.locking "0.0.2"]
                  [org.clojure/tools.cli "1.0.214"]
                  [cheshire "5.13.0"]
diff --git a/sci b/sci
index c556f447..f766255d 160000
--- a/sci
+++ b/sci
@@ -1 +1 @@
-Subproject commit c556f4474303c61da72e7a07eef496dcbf66a56e
+Subproject commit f766255d14647d46486546dc6afce1ae1bcd2c7b
diff --git a/src/babashka/impl/clojure/java/process.clj b/src/babashka/impl/clojure/java/process.clj
new file mode 100644
index 00000000..f479affc
--- /dev/null
+++ b/src/babashka/impl/clojure/java/process.clj
@@ -0,0 +1,6 @@
+(ns babashka.impl.clojure.java.process
+  (:require [clojure.java.process]
+            [sci.core :as sci]))
+
+(def cjp (sci/create-ns 'clojure.java.process nil))
+(def cjp-namespace (sci/copy-ns clojure.java.process cjp))
diff --git a/src/babashka/main.clj b/src/babashka/main.clj
index 1a90c663..1b15e139 100644
--- a/src/babashka/main.clj
+++ b/src/babashka/main.clj
@@ -25,6 +25,7 @@
    [babashka.impl.clojure.tools.reader-types :refer [edn-namespace
                                                      reader-types-namespace]]
    [babashka.impl.clojure.zip :refer [zip-namespace]]
+   [babashka.impl.clojure.java.process :refer [cjp-namespace]]
    [babashka.impl.common :as common]
    [babashka.impl.core :as bbcore]
    [babashka.impl.curl :refer [curl-namespace]]
@@ -389,6 +390,7 @@ Use bb run --help to show this help output.
                    'main main-var}
     'clojure.test t/clojure-test-namespace
     'clojure.math math-namespace
+    'clojure.java.process cjp-namespace
     'babashka.classpath classpath-namespace
     'babashka.classes classes-namespace
     'clojure.pprint pprint-namespace
diff --git a/test/babashka/error_test.clj b/test/babashka/error_test.clj
index e79967b3..d3230f75 100644
--- a/test/babashka/error_test.clj
+++ b/test/babashka/error_test.clj
@@ -11,7 +11,8 @@
   (-> line str/trimr
       ;; take into account JDK14+ and native image differences
       (str/replace "class clojure.lang" "clojure.lang")
-      (str/replace #" \(.*\)$" "")))
+      (str/replace #" \(.*\)$" "")
+      (str/replace #"--\d\d\d\d" "")))
 
 (defmacro multiline-equals [s1 s2]
   `(let [lines-s1# (str/split-lines ~s1)