diff --git a/CHANGELOG.md b/CHANGELOG.md
index c30f1001..d2a8272a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## Unreleased
+
+- Upgrade mvdan.cc/sh, which fixes a bug with associative arrays
+  ([#785](https://github.com/go-task/task/issues/785), [mvdan/sh#884](https://github.com/mvdan/sh/issues/884), [mvdan/sh#893](https://github.com/mvdan/sh/pull/893)).
+
 ## v3.13.0 - 2022-06-13
 
 - Added `-n` as an alias to `--dry`
diff --git a/go.mod b/go.mod
index cf1dba43..aec6d82e 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/stretchr/testify v1.7.2
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	gopkg.in/yaml.v3 v3.0.1
-	mvdan.cc/sh/v3 v3.5.1
+	mvdan.cc/sh/v3 v3.6.0-0.dev.0.20220704111049-a6e3029cd899
 )
 
 require (
@@ -21,6 +21,7 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e // indirect
 	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
+	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 )
 
 go 1.17
diff --git a/go.sum b/go.sum
index fd6c94c1..b8d7bcad 100644
--- a/go.sum
+++ b/go.sum
@@ -61,7 +61,6 @@ golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuX
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -70,5 +69,5 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 mvdan.cc/editorconfig v0.2.0/go.mod h1:lvnnD3BNdBYkhq+B4uBuFFKatfp02eB6HixDvEz91C0=
-mvdan.cc/sh/v3 v3.5.1 h1:hmP3UOw4f+EYexsJjFxvU38+kn+V/s2CclXHanIBkmQ=
-mvdan.cc/sh/v3 v3.5.1/go.mod h1:1JcoyAKm1lZw/2bZje/iYKWicU/KMd0rsyJeKHnsK4E=
+mvdan.cc/sh/v3 v3.6.0-0.dev.0.20220704111049-a6e3029cd899 h1:nwm4t5PtLlFd/H342GP50CtYf7vyMCOZkPx3g9shO0c=
+mvdan.cc/sh/v3 v3.6.0-0.dev.0.20220704111049-a6e3029cd899/go.mod h1:1JcoyAKm1lZw/2bZje/iYKWicU/KMd0rsyJeKHnsK4E=