diff --git a/core/services/job/wasm_file_spec_factory.go b/core/services/job/wasm_file_spec_factory.go
index 12bb5471d8..b2e1d92ba3 100644
--- a/core/services/job/wasm_file_spec_factory.go
+++ b/core/services/job/wasm_file_spec_factory.go
@@ -78,9 +78,10 @@ func (w WasmFileSpecFactory) rawSpecAndShaFromWasm(wasm, config []byte) ([]byte,
 }
 
 func (w WasmFileSpecFactory) sha(wasm, config []byte) string {
-	sha := sha256.New()
-	sha.Write(wasm)
-	return fmt.Sprintf("%x", sha.Sum(config))
+	sum := sha256.New()
+	sum.Write(wasm)
+	sum.Write(config)
+	return fmt.Sprintf("%x", sum.Sum(nil))
 }
 
 var _ WorkflowSpecFactory = (*WasmFileSpecFactory)(nil)
diff --git a/core/services/job/wasm_file_spec_factory_test.go b/core/services/job/wasm_file_spec_factory_test.go
index 9334a66d76..0bc95f7f6b 100644
--- a/core/services/job/wasm_file_spec_factory_test.go
+++ b/core/services/job/wasm_file_spec_factory_test.go
@@ -3,6 +3,7 @@ package job_test
 import (
 	"crypto/sha256"
 	"encoding/json"
+	"fmt"
 	"os"
 	"os/exec"
 	"testing"
@@ -31,12 +32,13 @@ func TestWasmFileSpecFactory(t *testing.T) {
 
 	rawBinary, err := os.ReadFile(binaryLocation)
 	require.NoError(t, err)
-	expected, err := host.GetWorkflowSpec(&host.ModuleConfig{Logger: logger.NullLogger}, rawBinary, config)
+	expected, err := host.GetWorkflowSpec(&host.ModuleConfig{Logger: logger.NullLogger, IsUncompressed: true}, rawBinary, config)
 	require.NoError(t, err)
 
 	expectedSha := sha256.New()
 	expectedSha.Write(rawBinary)
-	require.Equal(t, expectedSha.Sum(config), []byte(actualSha))
+	expectedSha.Write(config)
+	require.Equal(t, fmt.Sprintf("%x", expectedSha.Sum(nil)), actualSha)
 
 	require.Equal(t, *expected, actual)
 }
@@ -44,7 +46,7 @@ func TestWasmFileSpecFactory(t *testing.T) {
 func createTestBinary(t *testing.T) string {
 	const testBinaryLocation = "testdata/wasm/testmodule.wasm"
 
-	cmd := exec.Command("go", "build", "-o", testBinaryLocation, "github.com/smartcontractkit/chainlink/v2/core/services/job/testdata/wasm")
+	cmd := exec.Command("go1.22.7", "build", "-o", testBinaryLocation, "github.com/smartcontractkit/chainlink/v2/core/services/job/testdata/wasm")
 	cmd.Env = append(os.Environ(), "GOOS=wasip1", "GOARCH=wasm")
 
 	output, err := cmd.CombinedOutput()
diff --git a/core/services/job/yaml_spec_factory_test.go b/core/services/job/yaml_spec_factory_test.go
index b37c3efeed..c12d4872d9 100644
--- a/core/services/job/yaml_spec_factory_test.go
+++ b/core/services/job/yaml_spec_factory_test.go
@@ -2,6 +2,7 @@ package job_test
 
 import (
 	"crypto/sha256"
+	"fmt"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -74,5 +75,5 @@ func TestYamlSpecFactory_GetSpec(t *testing.T) {
 	require.NoError(t, err)
 
 	require.Equal(t, expected, actual)
-	assert.Equal(t, sha256.Sum256([]byte(anyYamlSpec)), actualSha)
+	assert.Equal(t, fmt.Sprintf("%x", sha256.Sum256([]byte(anyYamlSpec))), actualSha)
 }