diff --git a/go.mod b/go.mod
index 8cd6c56..d71c804 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,7 @@ module github.com/square/certigo
 
 require (
 	github.com/Masterminds/semver v1.4.2 // indirect
-	github.com/Masterminds/sprig v2.20.0+incompatible
+	github.com/Masterminds/sprig v2.22.0+incompatible
 	github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc // indirect
 	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect
 	github.com/aokoli/goutils v1.0.1 // indirect
diff --git a/go.sum b/go.sum
index 6dc8d7d..4a82daf 100644
--- a/go.sum
+++ b/go.sum
@@ -6,6 +6,8 @@ github.com/Masterminds/sprig v2.16.0+incompatible h1:QZbMUPxRQ50EKAq3LFMnxddMu88
 github.com/Masterminds/sprig v2.16.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
 github.com/Masterminds/sprig v2.20.0+incompatible h1:dJTKKuUkYW3RMFdQFXPU/s6hg10RgctmTjRcbZ98Ap8=
 github.com/Masterminds/sprig v2.20.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
+github.com/Masterminds/sprig v2.22.0+incompatible h1:z4yfnGrZ7netVz+0EDJ0Wi+5VZCSYp4Z0m2dk6cEM60=
+github.com/Masterminds/sprig v2.22.0+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5VpdgMhJosfJnn5/FoN2SRZ4p7fJNX58YPaU=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY=
@@ -26,6 +28,10 @@ github.com/mattn/go-colorable v0.0.0-20180310133214-efa589957cd0 h1:cDvUG90i1ssG
 github.com/mattn/go-colorable v0.0.0-20180310133214-efa589957cd0/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
 github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
 github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
+github.com/mitchellh/copystructure v1.0.0 h1:Laisrj+bAB6b/yJwB5Bt3ITZhGJdqmxquMKeZ+mmkFQ=
+github.com/mitchellh/copystructure v1.0.0/go.mod h1:SNtv71yrdKgLRyLFxmLdkAbkKEFWgYaq1OVrnRcwhnw=
+github.com/mitchellh/reflectwalk v1.0.0 h1:9D+8oIskB4VJBN5SFlmc27fSlIBZaov1Wpk/IfikLNY=
+github.com/mitchellh/reflectwalk v1.0.0/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
 github.com/mwitkow/go-http-dialer v0.0.0-20161116154839-378f744fb2b8 h1:BhQQWYKJwXPtAhm12d4gQU4LKS9Yov22yOrDc2QA7ho=
 github.com/mwitkow/go-http-dialer v0.0.0-20161116154839-378f744fb2b8/go.mod h1:ntWhh7pzdiiRKBMxUB5iG+Q2gmZBxGxpX1KyK6N8kX8=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=