diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PostmanCollectionCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PostmanCollectionCodegen.java
index 92ca24ebe1a..03fa6c5141b 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PostmanCollectionCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PostmanCollectionCodegen.java
@@ -753,6 +753,9 @@ public class PostmanCollectionCodegen extends DefaultCodegen implements CodegenC
             } else if (value instanceof Integer) {
                 ret = ret + JSON_ESCAPE_DOUBLE_QUOTE + key + JSON_ESCAPE_DOUBLE_QUOTE + ": " +
                         value;
+            } else if (value instanceof Boolean) {
+                ret = ret + JSON_ESCAPE_DOUBLE_QUOTE + key + JSON_ESCAPE_DOUBLE_QUOTE + ": " +
+                        value;
             } else if (value instanceof LinkedHashMap) {
                 String in = ret + JSON_ESCAPE_DOUBLE_QUOTE + key + JSON_ESCAPE_DOUBLE_QUOTE + ": ";
                 ret = traverseMap(((LinkedHashMap<String, Object>) value),  in);
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/postman/PostmanCollectionCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/postman/PostmanCollectionCodegenTest.java
index 32b33f2370b..fedee8c1129 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/postman/PostmanCollectionCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/postman/PostmanCollectionCodegenTest.java
@@ -602,11 +602,12 @@ public class PostmanCollectionCodegenTest {
     @Test
     public void convertLinkedHashMapToJson() {
 
-        final String EXPECTED = "{\\n \\\"id\\\": 1,\\n \\\"city\\\": \\\"Amsterdam\\\"\\n}";
+        final String EXPECTED = "{\\n \\\"id\\\": 1,\\n \\\"city\\\": \\\"Amsterdam\\\",\\n \\\"safe\\\": true\\n}";
 
         LinkedHashMap<String, Object> city = new LinkedHashMap<>();
         city.put("id", 1);
         city.put("city", "Amsterdam");
+        city.put("safe", true);
 
         assertEquals(EXPECTED, new PostmanCollectionCodegen().convertToJson(city));