diff --git a/task.go b/task.go
index 19caa2e7..2fe29bec 100644
--- a/task.go
+++ b/task.go
@@ -8,6 +8,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sync"
 
 	"github.com/go-task/task/execext"
 
@@ -33,6 +34,9 @@ type Executor struct {
 
 	taskvars      Vars
 	watchingFiles map[string]struct{}
+
+	dynamicCache   Vars
+	muDynamicCache sync.Mutex
 }
 
 // Vars is a string[string] variables map
@@ -71,6 +75,10 @@ func (e *Executor) Run(args ...string) error {
 		e.Stderr = os.Stderr
 	}
 
+	if e.dynamicCache == nil {
+		e.dynamicCache = make(Vars, 10)
+	}
+
 	// check if given tasks exist
 	for _, a := range args {
 		if _, ok := e.Tasks[a]; !ok {
diff --git a/variable_handling.go b/variable_handling.go
index 8d18e671..493390b1 100644
--- a/variable_handling.go
+++ b/variable_handling.go
@@ -26,6 +26,12 @@ func (e *Executor) handleDynamicVariableContent(value string) (string, error) {
 		return value, nil
 	}
 
+	e.muDynamicCache.Lock()
+	defer e.muDynamicCache.Unlock()
+	if result, ok := e.dynamicCache[value]; ok {
+		return result, nil
+	}
+
 	buff := bytes.NewBuffer(nil)
 
 	opts := &execext.RunCommandOptions{
@@ -46,6 +52,7 @@ func (e *Executor) handleDynamicVariableContent(value string) (string, error) {
 
 	result = strings.TrimSpace(result)
 	e.verbosePrintfln(`task: dynamic variable: "%s", result: "%s"`, value, result)
+	e.dynamicCache[value] = result
 	return result, nil
 }