diff --git a/README.md b/README.md
index 43c78a9..1ad3000 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,22 @@ Next, any of the following optional parameters may be specified:
 * `$DOCKERFILE` (default `$CONTEXT/Dockerfile`): the path to the `Dockerfile`
   to build.
 
+* `$BUILDKIT_SSH` your ssh key location that is mounted in your `Dockerfile`. This is
+  generally used for pulling dependencies from private repositories. 
+
+  For Example. In your `Dockerfile`, you can mount a key as
+  ```
+  RUN --mount=type=ssh,id=github_ssh_key pip install -U -r ./hats/requirements-test.txt
+  ``` 
+
+  Then in your Concourse YAML configuration:
+  ```
+  params:
+    BUILDKIT_SSH: github_ssh_key=<PATH-TO-YOUR-KEY>
+  ```
+
+  Read more about ssh mount [here](https://docs.docker.com/develop/develop-images/build_enhancements/).
+
 * `$BUILD_ARG_*`: params prefixed with `BUILD_ARG_` will be provided as build
   args. For example `BUILD_ARG_foo=bar`, will set the `foo` build arg as `bar`.
 
diff --git a/task.go b/task.go
index 3fd0264..2e5affd 100644
--- a/task.go
+++ b/task.go
@@ -142,6 +142,12 @@ func Build(buildkitd *Buildkitd, outputsDir string, req Request) (Response, erro
 		)
 	}
 
+	if cfg.BuildkitSSH != "" {
+		buildctlArgs = append(buildctlArgs,
+			"--ssh", cfg.BuildkitSSH,
+		)
+	}
+
 	builds = append(builds, buildctlArgs)
 	targets = append(targets, "")
 
diff --git a/task_test.go b/task_test.go
index 2289aa6..1d8bd48 100644
--- a/task_test.go
+++ b/task_test.go
@@ -114,6 +114,14 @@ func (s *TaskSuite) TestTarget() {
 	s.NoError(err)
 }
 
+func (s *TaskSuite) TestBuildkitSSH() {
+	s.req.Config.ContextDir = "testdata/buildkit-ssh"
+	s.req.Config.BuildkitSSH = "my_ssh_key=./id_rsa_test"
+
+	_, err := s.build()
+	s.NoError(err)
+}
+
 func (s *TaskSuite) TestTargetFile() {
 	s.req.Config.ContextDir = "testdata/target"
 	s.req.Config.TargetFile = "testdata/target/target_file"
diff --git a/testdata/buildkit-ssh/Dockerfile b/testdata/buildkit-ssh/Dockerfile
new file mode 100644
index 0000000..42f55e3
--- /dev/null
+++ b/testdata/buildkit-ssh/Dockerfile
@@ -0,0 +1,5 @@
+# syntax = docker/dockerfile:1.0-experimental
+FROM alpine
+
+# shows secret from custom secret location:
+RUN --mount=type=secret,id=my_ssh_key cat ./id_rsa_test
diff --git a/testdata/buildkit-ssh/id_rsa_test b/testdata/buildkit-ssh/id_rsa_test
new file mode 100644
index 0000000..c1fae49
--- /dev/null
+++ b/testdata/buildkit-ssh/id_rsa_test
@@ -0,0 +1,49 @@
+-----BEGIN OPENSSH PRIVATE KEY-----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+lbm2G41PwUlifZUlkST0wZVhqGRiGtnBTw9JbQRcc0nUthDHn8mVevY2y2Dy1mSNvpAXQM
+THOZ5jAc1lfhZ5WuMEhESS5QeTS95Sz+co+EB0AIgNH0nmuryu2/WGECNCLrCDqIOgA/gn
+8uVHYxjAihXok1ARyzCu6pmVzpKXFyNwsnnj0fSC8ttZxdwtKrw7WhKoP96PozNPG6zIa/
+yQ8eHCDxO1KHZUL0CiMrhA8jS0bondo7hpPxTC8L0x+ib/zLNmvxRyGB0h27BCPm0U+tMO
+R0+vT86LFp7wJrQG2/Doo3rpeBkPepHWWQ+gxn+sFCLjx9GwDxNFM4mggJi8cD2oxQYYet
+nkh/wPIaN+2su/Zj8BAAABACd5dBvovh1vvOZuwTtaCmbTpc3PFwG1yOtqxQb1w/TAD4Ss
+HOG3LiM2C2vFySokGeKGgt35GjIXgR2L0m2Lj+SgBteNKy1GvAX6MZT3MCw0aaH9FBzTTw
+bBG0mGRNvw8d9dvtfkaJdfOaojnCi2c7mAX3bTiK1gmDPeX8izQ9ktYqVusyRgtacZOv9P
+Y0giYnIWYsakPDEnLSD85nDcjnZ1FeP1bokwOqTyc6on8S786p/JeHEjn8Mh8y6aG2cRW3
+8/eP2eqkCX/R3pd0hIjKNMilYDMKu+xGcDiSPqKBA5GYRJ4loWAE2xcZhlMM4GhgxXYdZy
+kEqcF0JWnOC68CQAAAEBANhEZ3QZ7umloo6TDq5F2PaKiX9ZrrJ0hAySCUyvk7Z9tdWcCb
+f4wA6KbuwG5hOIv2JJmFzV6q/Xn17Ct8TGKY0i6a1e61WCAuKUxhHPbs0EVTSbBLLrVcAx
+h45YTLhqeAqUAgSCylnWGBfOB6+bKUYhMBLROB9K7Mm0xckbj073VrN1pGyJwpjwdnd+TV
+zG9H9Lskf3dJT/s7p0+MGgiRsQBIiIrxDVx/gJAb2NFhbnCRWL0Nktnde4aoI+pvBhHguA
+qPqnC32+ZFu5q0p72bPC3TK7q9gCufrB8vBW4zi4vK0MtaY/UHK27ukZbYCqa9SS6A5ZNo
+Ssl4kD0W3XTIkAAAEBAMyR1JAfDLwkY+FJWW593EigjfCsCxyovsCu7eCVDTNqj58GmVO5
+jwpX7AcTJ9sbck1cajPJJJonOa9qNf2UQDgoB7SJ+9Zw+aNaLFfFBsCHOouuUFrDjTDf1M
+j8FJpV33Qt2VCbPMZwkwFgtQhhMSJbrUv1wZhDfW7WMKRBV1QOeGX+GlW30GnSobxlFKUS
+mDMYAtsRHa/4+w/itOQgQT6e2nPYlwofMbrZxReaAUMAvt6RwZyoUJ9+gStuQ7gLYvG4Nt
+ou1ZzGDYavhTRsywAMfkQ9CN9fSqieafDTcqcBi2XcCx7IrbDCLYJZA3zB6HFzgGvF/plG
+gy40fbJ6LUkAAAAcem9lbGlAWm9lcy1NYWNCb29rLVByby5sb2NhbAECAwQFBgc=
+-----END OPENSSH PRIVATE KEY-----
diff --git a/testdata/buildkit-ssh/id_rsa_test.pub b/testdata/buildkit-ssh/id_rsa_test.pub
new file mode 100644
index 0000000..04c2804
--- /dev/null
+++ b/testdata/buildkit-ssh/id_rsa_test.pub
@@ -0,0 +1 @@
+ssh-rsa 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 zoeli@Zoes-MacBook-Pro.local
diff --git a/types.go b/types.go
index 4862070..38960d3 100644
--- a/types.go
+++ b/types.go
@@ -48,6 +48,7 @@ type Config struct {
 
 	ContextDir     string `json:"context"              envconfig:"CONTEXT,optional"`
 	DockerfilePath string `json:"dockerfile,omitempty" envconfig:"DOCKERFILE,optional"`
+	BuildkitSSH    string `json:"buildkit_ssh"         envconfig:"optional"`
 
 	Target            string   `json:"target"      envconfig:"optional"`
 	TargetFile        string   `json:"target_file" envconfig:"optional"`