diff --git a/Makefile b/Makefile
index a462dffaf0..4c286b7ebd 100644
--- a/Makefile
+++ b/Makefile
@@ -69,3 +69,8 @@ docker/build/apk/shell:
 
 help/vendor:
 	@$(MAKE) --no-print-directory -s -C vendor help
+
+update/%:
+	rm -f vendor/$(subst update/,,$@)/VERSION
+	make -C vendor/$(subst update/,,$@) VERSION
+	make readme
diff --git a/README.md b/README.md
index 8700aebae1..7d644e2cfb 100644
--- a/README.md
+++ b/README.md
@@ -249,7 +249,7 @@ terraform-0.12            0.12.2     Terraform is a tool for building, changing,
 terraform-docs            0.4.5      Generate docs from terraform modules
 terragrunt                0.19.2     Terragrunt is a thin wrapper for Terraform that provides extra tools for working with multiple Terraform modules.
 terrahelp                 0.6.3      Terrahelp is as a command line utility that provides useful tricks like masking of terraform output.
-tfenv                     0.3.0      Transform environment variables for use with Terraform (e.g. `HOSTNAME` ⇨ `TF_VAR_hostname`)
+tfenv                     0.4.0      Transform environment variables for use with Terraform (e.g. `HOSTNAME` ⇨ `TF_VAR_hostname`)
 tfmask                    0.2.0      Terraform utility to mask select output from `terraform plan` and `terraform apply`
 variant                   0.28.0     Variant is a Universal CLI tool that works like a task runner
 venona                    0.20.0     Codefresh runtime-environment agent
diff --git a/docs/targets.md b/docs/targets.md
index 3d0a908030..5a8933dd4d 100644
--- a/docs/targets.md
+++ b/docs/targets.md
@@ -60,7 +60,7 @@ terraform-0.12            0.12.2     Terraform is a tool for building, changing,
 terraform-docs            0.4.5      Generate docs from terraform modules
 terragrunt                0.19.2     Terragrunt is a thin wrapper for Terraform that provides extra tools for working with multiple Terraform modules.
 terrahelp                 0.6.3      Terrahelp is as a command line utility that provides useful tricks like masking of terraform output.
-tfenv                     0.3.0      Transform environment variables for use with Terraform (e.g. `HOSTNAME` ⇨ `TF_VAR_hostname`)
+tfenv                     0.4.0      Transform environment variables for use with Terraform (e.g. `HOSTNAME` ⇨ `TF_VAR_hostname`)
 tfmask                    0.2.0      Terraform utility to mask select output from `terraform plan` and `terraform apply`
 variant                   0.28.0     Variant is a Universal CLI tool that works like a task runner
 venona                    0.20.0     Codefresh runtime-environment agent
diff --git a/vendor/tfenv/VERSION b/vendor/tfenv/VERSION
index 0d91a54c7d..1d0ba9ea18 100644
--- a/vendor/tfenv/VERSION
+++ b/vendor/tfenv/VERSION
@@ -1 +1 @@
-0.3.0
+0.4.0