diff --git a/pkg/container/docker_run.go b/pkg/container/docker_run.go
index b935166c..f58287e3 100644
--- a/pkg/container/docker_run.go
+++ b/pkg/container/docker_run.go
@@ -505,7 +505,7 @@ func (cr *containerReference) extractEnv(srcPath string, env *map[string]string)
 		// SOME_VAR=data=moredata
 		// SOME_VAR=datamoredata
 		singleLineEnvPattern = regexp.MustCompile(`^([^=]*)\=(.*)$`)
-		multiLineEnvPattern = regexp.MustCompile(`^([^<]+)<<(\w+)$`)
+		multiLineEnvPattern = regexp.MustCompile(`^([^<]+)<<([\w-]+)$`)
 	}
 
 	localEnv := *env
diff --git a/pkg/runner/testdata/env-and-path/push.yaml b/pkg/runner/testdata/env-and-path/push.yaml
index 8773afc7..11c7ae3a 100644
--- a/pkg/runner/testdata/env-and-path/push.yaml
+++ b/pkg/runner/testdata/env-and-path/push.yaml
@@ -66,3 +66,14 @@ jobs:
             echo "${KEY2} doesn't == 'value'"
             exit 1
           fi
+      - name: "Write multiline env with UUID to $GITHUB_ENV"
+        run: |
+          echo 'KEY3<<ghadelimiter_b8273c6d-d535-419a-a010-b0aaac240e36' >> $GITHUB_ENV
+                echo value3 >> $GITHUB_ENV
+                echo 'ghadelimiter_b8273c6d-d535-419a-a010-b0aaac240e36' >> $GITHUB_ENV
+      - name: "Check multiline env with UUID to $GITHUB_ENV"
+        run: |
+          if [[ "${KEY3}" != "value3" ]]; then
+            echo "${KEY3} doesn't == 'value3'"
+            exit 1
+          fi