diff --git a/internal/osbuild1/result.go b/internal/osbuild1/result.go
index b7d51303f..e8e8eda53 100644
--- a/internal/osbuild1/result.go
+++ b/internal/osbuild1/result.go
@@ -1,9 +1,12 @@
 package osbuild1
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
 	"io"
+
+	"github.com/osbuild/osbuild-composer/internal/osbuild2"
 )
 
 type rawAssemblerResult struct {
@@ -123,3 +126,54 @@ func (cr *Result) Write(writer io.Writer) error {
 
 	return nil
 }
+
+func (cr *Result) UnmarshalJSON(data []byte) error {
+	// NOTE(akoutsou) 1to2t: result format depends on the osbuild version; this
+	// unmarshaller tries to read both old and new versions
+	type resultAlias Result
+	crv1 := new(resultAlias)
+
+	dec := json.NewDecoder(bytes.NewReader(data))
+	dec.DisallowUnknownFields()
+	if err := dec.Decode(&crv1); err == nil {
+		*cr = Result(*crv1)
+		return nil
+	}
+
+	// try osbuild2 result object
+	crv2 := new(osbuild2.Result)
+
+	// NOTE: Using plain (non-strict) Unmarshal here.  The format of the new
+	// osbuild output schema is not yet fixed and is likely to change, so
+	// disallowing unknown fields will likely cause failures in the near future.
+	if err := json.Unmarshal(data, &crv2); err != nil {
+		return err
+	}
+	cr.fromV2(crv2)
+	return nil
+}
+
+// Convert new OSBuild v2 format result into a v1 by copying the most useful
+// values:
+// - Compose success status
+// - Output of Stages (Log) as flattened list of v1 StageResults
+func (cr *Result) fromV2(crv2 *osbuild2.Result) {
+	cr.Success = crv2.Success
+	// Empty build and assembler results for new types of jobs
+	cr.Build = new(buildResult)
+	cr.Assembler = new(rawAssemblerResult)
+
+	// convert all stages logs from all pipelines into v1 StageResult objects
+	for pname, stages := range crv2.Log {
+		for idx, stage := range stages {
+			stageResult := StageResult{
+				// Create uniquely identifiable name for the stage:
+				// <pipeline name>:<stage index>-<stage type>
+				Name:    fmt.Sprintf("%s:%d-%s", pname, idx, stage.Type),
+				Success: stage.Success,
+				Output:  stage.Output,
+			}
+			cr.Stages = append(cr.Stages, stageResult)
+		}
+	}
+}