diff --git a/srcpkgs/umoci/patches/which.patch b/srcpkgs/umoci/patches/which.patch
new file mode 100644
index 0000000000..40ac8618de
--- /dev/null
+++ b/srcpkgs/umoci/patches/which.patch
@@ -0,0 +1,23 @@
+From 36ca035cc8cb96b9c0febebcde4d5f4fc82a6022 Mon Sep 17 00:00:00 2001
+From: Cameron Nemo <CameronNemo@users.noreply.github.com>
+Date: Sun, 29 Aug 2021 22:20:27 -0700
+Subject: [PATCH] fix(Makefile): avoid usage of which
+
+which is not available in some build environments
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index d76e37b4..3df909c2 100644
+--- a/Makefile
++++ b/Makefile
+@@ -14,7 +14,7 @@
+ # limitations under the License.
+ 
+ # Use bash, so that we can do process substitution.
+-SHELL := $(shell which bash)
++SHELL := $(shell command -v bash)
+ 
+ # Go tools.
+ GO ?= go
diff --git a/srcpkgs/umoci/template b/srcpkgs/umoci/template
index e9ea9bf87c..8c38ceb685 100644
--- a/srcpkgs/umoci/template
+++ b/srcpkgs/umoci/template
@@ -1,6 +1,6 @@
 # Template file for 'umoci'
 pkgname=umoci
-version=0.4.6
+version=0.4.7
 revision=1
 build_style=go
 go_import_path=github.com/opencontainers/umoci
@@ -11,7 +11,7 @@ maintainer="Cameron Nemo <cnemo@tutanota.com>"
 license="Apache-2.0"
 homepage="https://umo.ci"
 distfiles="https://${go_import_path}/archive/v${version}.tar.gz"
-checksum=19ca1234c7991369586488f4ebb7656f566e1e3d19d2518630620eb54061b87c
+checksum=c01b36de6fdc513eb65add57bc882d72f94fc3b4b65a8f9ef59826fb754af93e
 
 post_install() {
 	make docs