diff --git a/README.md b/README.md
index db9e5da0..a0e5a4a4 100644
--- a/README.md
+++ b/README.md
@@ -1124,13 +1124,13 @@ mysetting: |
 
 The possibility is endless. Try importing values from your golang app, bash script, jsonnet, or anything!
 
-Then `execEnvs` same as `exec`, but it can receive a dict as the envs.  
+Then `envExec` same as `exec`, but it can receive a dict as the envs.  
 
-A usual usage of `execEnvs` would look like this:  
+A usual usage of `envExec` would look like this:  
 
 ```yaml
 mysetting: |
-{{ execEnvs (dict "envkey" "envValue") "./mycmd" (list "arg1" "arg2" "--flag1") | indent 2 }}
+{{ envExec (dict "envkey" "envValue") "./mycmd" (list "arg1" "arg2" "--flag1") | indent 2 }}
 ```
 
 
diff --git a/pkg/tmpl/context_funcs.go b/pkg/tmpl/context_funcs.go
index c2f00159..d473c862 100644
--- a/pkg/tmpl/context_funcs.go
+++ b/pkg/tmpl/context_funcs.go
@@ -20,7 +20,7 @@ type Values = map[string]interface{}
 
 func (c *Context) createFuncMap() template.FuncMap {
 	funcMap := template.FuncMap{
-		"execEnvs":         c.ExecEnvs,
+		"envExec":          c.EnvExec,
 		"exec":             c.Exec,
 		"isFile":           c.IsFile,
 		"readFile":         c.ReadFile,
@@ -50,7 +50,7 @@ func (c *Context) createFuncMap() template.FuncMap {
 }
 
 // TODO: in the next major version, remove this function.
-func (c *Context) ExecEnvs(envs map[string]string, command string, args []interface{}, inputs ...string) (string, error) {
+func (c *Context) EnvExec(envs map[string]interface{}, command string, args []interface{}, inputs ...string) (string, error) {
 	var input string
 	if len(inputs) > 0 {
 		input = inputs[0]
@@ -66,6 +66,18 @@ func (c *Context) ExecEnvs(envs map[string]string, command string, args []interf
 		}
 	}
 
+	envsLen := len(envs)
+	strEnvs := make(map[string]string, envsLen)
+
+	for k, v := range envs {
+		switch v.(type) {
+		case string:
+			strEnvs[k] = fmt.Sprintf("%v", v)
+		default:
+			return "", fmt.Errorf("unexpected type of env \"%s\" in envs %v at index %s", reflect.TypeOf(v), envs, k)
+		}
+	}
+
 	cmd := exec.Command(command, strArgs...)
 	cmd.Dir = c.basePath
 	if envs != nil {
@@ -128,7 +140,7 @@ func (c *Context) ExecEnvs(envs map[string]string, command string, args []interf
 }
 
 func (c *Context) Exec(command string, args []interface{}, inputs ...string) (string, error) {
-	return c.ExecEnvs(nil, command, args, inputs...)
+	return c.EnvExec(nil, command, args, inputs...)
 }
 
 func (c *Context) IsFile(filename string) (bool, error) {
diff --git a/pkg/tmpl/context_funcs_test.go b/pkg/tmpl/context_funcs_test.go
index ed1a2116..7806ddea 100644
--- a/pkg/tmpl/context_funcs_test.go
+++ b/pkg/tmpl/context_funcs_test.go
@@ -268,9 +268,9 @@ func TestExec(t *testing.T) {
 	require.Error(t, err, "Expected error to be returned when executing command with non-zero exit code")
 }
 
-// TestExecEnvs tests that ExecEnvs returns the expected output.
+// TestEnvExec tests that EnvExec returns the expected output.
 // TODO: in the next major version, this test should be removed.
-func TestExecEnvs(t *testing.T) {
+func TestEnvExec(t *testing.T) {
 	ctx := &Context{basePath: "."}
 
 	expected := "foo"
@@ -278,14 +278,20 @@ func TestExecEnvs(t *testing.T) {
 	testKey := "testkey"
 
 	// test that the command is executed with environment variables
-	output, err := ctx.ExecEnvs(map[string]string{testKey: "foo"}, "bash", []interface{}{"-c", fmt.Sprintf("echo -n $%s", testKey)}, "")
+	output, err := ctx.EnvExec(map[string]interface{}{testKey: "foo"}, "bash", []interface{}{"-c", fmt.Sprintf("echo -n $%s", testKey)}, "")
 
 	require.Nilf(t, err, "Expected no error to be returned when executing command with environment variables")
 
 	require.Equalf(t, expected, output, "Expected %s to be returned when executing command with environment variables", expected)
 
+	// test that the command is executed with invalid environment variables
+	output, err = ctx.EnvExec(map[string]interface{}{testKey: 123}, "bash", []interface{}{"-c", fmt.Sprintf("echo -n $%s", testKey)}, "")
+
+	require.Errorf(t, err, "Expected error to be returned when executing command with invalid environment variables")
+	require.Emptyf(t, output, "Expected empty string to be returned when executing command with invalid environment variables")
+
 	// test that the command is executed with no environment variables
-	output, err = ctx.ExecEnvs(nil, "bash", []interface{}{"-c", fmt.Sprintf("echo -n $%s", testKey)}, "")
+	output, err = ctx.EnvExec(nil, "bash", []interface{}{"-c", fmt.Sprintf("echo -n $%s", testKey)}, "")
 	require.Nilf(t, err, "Expected no error to be returned when executing command with no environment variables")
 
 	require.Emptyf(t, output, "Expected empty string to be returned when executing command with no environment variables")
@@ -293,7 +299,7 @@ func TestExecEnvs(t *testing.T) {
 	// test that the command is executed with os environment variables
 	os.Setenv(testKey, "foo")
 	defer os.Unsetenv(testKey)
-	output, err = ctx.ExecEnvs(nil, "bash", []interface{}{"-c", fmt.Sprintf("echo -n $%s", testKey)}, "")
+	output, err = ctx.EnvExec(nil, "bash", []interface{}{"-c", fmt.Sprintf("echo -n $%s", testKey)}, "")
 
 	require.Nilf(t, err, "Expected no error to be returned when executing command with environment variables")