diff --git a/post-processor/atlas/post-processor.go b/post-processor/atlas/post-processor.go
index 2d3e4e39f..edfc1d7c4 100644
--- a/post-processor/atlas/post-processor.go
+++ b/post-processor/atlas/post-processor.go
@@ -53,7 +53,8 @@ type PostProcessor struct {
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{},
 		},
diff --git a/post-processor/compress/post-processor.go b/post-processor/compress/post-processor.go
index 1a4b97595..8b70bc456 100644
--- a/post-processor/compress/post-processor.go
+++ b/post-processor/compress/post-processor.go
@@ -31,7 +31,7 @@ type Config struct {
 	Archive   string
 	Algorithm string
 
-	ctx *interpolate.Context
+	ctx interpolate.Context
 }
 
 type PostProcessor struct {
@@ -52,7 +52,8 @@ var (
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{},
 		},
@@ -69,7 +70,7 @@ func (p *PostProcessor) Configure(raws ...interface{}) error {
 		p.config.OutputPath = "packer_{{.BuildName}}_{{.Provider}}"
 	}
 
-	if err = interpolate.Validate(p.config.OutputPath, p.config.ctx); err != nil {
+	if err = interpolate.Validate(p.config.OutputPath, &p.config.ctx); err != nil {
 		errs = packer.MultiErrorAppend(
 			errs, fmt.Errorf("Error parsing target template: %s", err))
 	}
@@ -94,7 +95,7 @@ func (p *PostProcessor) Configure(raws ...interface{}) error {
 				errs, fmt.Errorf("%s must be set", key))
 		}
 
-		*ptr, err = interpolate.Render(p.config.OutputPath, p.config.ctx)
+		*ptr, err = interpolate.Render(p.config.OutputPath, &p.config.ctx)
 		if err != nil {
 			errs = packer.MultiErrorAppend(
 				errs, fmt.Errorf("Error processing %s: %s", key, err))
diff --git a/post-processor/docker-import/post-processor.go b/post-processor/docker-import/post-processor.go
index cb0e4ec7a..f9a9a18a9 100644
--- a/post-processor/docker-import/post-processor.go
+++ b/post-processor/docker-import/post-processor.go
@@ -27,7 +27,8 @@ type PostProcessor struct {
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{},
 		},
diff --git a/post-processor/docker-push/post-processor.go b/post-processor/docker-push/post-processor.go
index 7fd2e4a32..d56f91382 100644
--- a/post-processor/docker-push/post-processor.go
+++ b/post-processor/docker-push/post-processor.go
@@ -33,7 +33,8 @@ type PostProcessor struct {
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{},
 		},
diff --git a/post-processor/docker-save/post-processor.go b/post-processor/docker-save/post-processor.go
index ab6170802..2e3b36b4e 100644
--- a/post-processor/docker-save/post-processor.go
+++ b/post-processor/docker-save/post-processor.go
@@ -31,7 +31,8 @@ type PostProcessor struct {
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{},
 		},
diff --git a/post-processor/docker-tag/post-processor.go b/post-processor/docker-tag/post-processor.go
index a531f2820..2f52e965d 100644
--- a/post-processor/docker-tag/post-processor.go
+++ b/post-processor/docker-tag/post-processor.go
@@ -31,7 +31,8 @@ type PostProcessor struct {
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{},
 		},
diff --git a/post-processor/vagrant-cloud/post-processor.go b/post-processor/vagrant-cloud/post-processor.go
index ace2a5c71..53d75dac1 100644
--- a/post-processor/vagrant-cloud/post-processor.go
+++ b/post-processor/vagrant-cloud/post-processor.go
@@ -47,7 +47,8 @@ type PostProcessor struct {
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{
 				"box_download_url",
diff --git a/post-processor/vagrant/post-processor.go b/post-processor/vagrant/post-processor.go
index 63200272b..bc39c27fa 100644
--- a/post-processor/vagrant/post-processor.go
+++ b/post-processor/vagrant/post-processor.go
@@ -170,8 +170,9 @@ func (p *PostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (pac
 func (p *PostProcessor) configureSingle(c *Config, raws ...interface{}) error {
 	var md mapstructure.Metadata
 	err := config.Decode(c, &config.DecodeOpts{
-		Metadata:    &md,
-		Interpolate: true,
+		Metadata:           &md,
+		Interpolate:        true,
+		InterpolateContext: &c.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{
 				"output",
diff --git a/post-processor/vsphere/post-processor.go b/post-processor/vsphere/post-processor.go
index 0b25c7b2c..f13395765 100644
--- a/post-processor/vsphere/post-processor.go
+++ b/post-processor/vsphere/post-processor.go
@@ -43,7 +43,8 @@ type PostProcessor struct {
 
 func (p *PostProcessor) Configure(raws ...interface{}) error {
 	err := config.Decode(&p.config, &config.DecodeOpts{
-		Interpolate: true,
+		Interpolate:        true,
+		InterpolateContext: &p.config.ctx,
 		InterpolateFilter: &interpolate.RenderFilter{
 			Exclude: []string{},
 		},