diff --git a/CHANGELOG.md b/CHANGELOG.md
index d93a62bb..765e970d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@
 -->
 
 ## Master
+- Adds mergeable state property in the Github PR struct [@Juanpe][] - [#318](https://github.com/danger/swift/pull/318)
 
 ## 3.1.0
 
diff --git a/Documentation/reference/structs/GitHubPR.md b/Documentation/reference/structs/GitHubPR.md
index 2bd7ba88..b3a4d1d1 100644
--- a/Documentation/reference/structs/GitHubPR.md
+++ b/Documentation/reference/structs/GitHubPR.md
@@ -127,6 +127,14 @@ public let isMerged: Bool?
 
 > A boolean indicating if the pull request has been merged.
 
+### `mergeable`
+
+```swift
+public let mergeable: MergeableState
+```
+
+> The state for mergeable based on the existence of merge conflicts: conflicting, mergeable, unknown.
+
 ### `commitCount`
 
 ```swift
diff --git a/Documentation/reference/structs/PullRequest.md b/Documentation/reference/structs/PullRequest.md
index c62b839c..b4fd1ba0 100644
--- a/Documentation/reference/structs/PullRequest.md
+++ b/Documentation/reference/structs/PullRequest.md
@@ -127,6 +127,14 @@ public let isMerged: Bool?
 
 > A boolean indicating if the pull request has been merged.
 
+### `mergeable`
+
+```swift
+public let mergeable: MergeableState
+```
+
+> The state for mergeable based on the existence of merge conflicts: conflicting, mergeable, unknown.
+
 ### `commitCount`
 
 ```swift
diff --git a/Sources/Danger/GitHubDSL.swift b/Sources/Danger/GitHubDSL.swift
index b343c18b..aa27d921 100644
--- a/Sources/Danger/GitHubDSL.swift
+++ b/Sources/Danger/GitHubDSL.swift
@@ -42,6 +42,7 @@ extension GitHub {
             case state
             case head
             case base
+            case mergeable
             case isLocked = "locked"
             case isMerged = "merged"
             case createdAt = "created_at"
@@ -61,6 +62,12 @@ extension GitHub {
             case merged
             case locked
         }
+        
+        public enum MergeableState: String, Decodable {
+            case conflicting
+            case mergeable
+            case unknown
+        }
 
         /// The number of the pull request.
         public let number: Int
@@ -106,6 +113,9 @@ extension GitHub {
 
         /// A boolean indicating if the pull request has been merged.
         public let isMerged: Bool?
+        
+        /// The state for mergeable based on the existence of merge conflicts: conflicting, mergeable, unknown.
+        public let mergeable: MergeableState
 
         /// The number of commits in the pull request.
         public let commitCount: Int?
diff --git a/Sources/DangerFixtures/DangerDSLResources/CustomGitHubDSL.swift b/Sources/DangerFixtures/DangerDSLResources/CustomGitHubDSL.swift
index 4110aa2d..2cde03f6 100644
--- a/Sources/DangerFixtures/DangerDSLResources/CustomGitHubDSL.swift
+++ b/Sources/DangerFixtures/DangerDSLResources/CustomGitHubDSL.swift
@@ -495,6 +495,7 @@ public func githubJSONWithFiles(created: [String] = [], modified: [String] = [],
               "updated_at": "2016-08-17T15:26:15Z",
               "closed_at": "2016-08-17T15:26:14Z",
               "merged_at": "2016-08-17T15:26:14Z",
+              "mergeable": "mergeable",
               "merge_commit_sha": "e80bc6c78cd2f3524577e1401d7a460feba7a26c",
               "assignee": {
                 "login": "orta",
@@ -800,9 +801,8 @@ public func githubJSONWithFiles(created: [String] = [], modified: [String] = [],
               },
               "author_association": "MEMBER",
               "merged": true,
-              "mergeable": null,
+              "mergeable": "mergeable",
               "rebaseable": null,
-              "mergeable_state": "unknown",
               "merged_by": {
                 "login": "ashfurrow",
                 "id": 498212,
diff --git a/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHub.swift b/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHub.swift
index d7c934b9..a4be0743 100644
--- a/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHub.swift
+++ b/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHub.swift
@@ -543,6 +543,7 @@ public let DSLGitHubJSON = """
           "updated_at": "2016-08-17T15:26:15Z",
           "closed_at": "2016-08-17T15:26:14Z",
           "merged_at": "2016-08-17T15:26:14Z",
+          "mergeable": "mergeable",
           "merge_commit_sha": "e80bc6c78cd2f3524577e1401d7a460feba7a26c",
           "assignee": {
             "login": "orta",
@@ -848,9 +849,8 @@ public let DSLGitHubJSON = """
           },
           "author_association": "MEMBER",
           "merged": true,
-          "mergeable": null,
+          "mergeable": "conflicting",
           "rebaseable": null,
-          "mergeable_state": "unknown",
           "merged_by": {
             "login": "ashfurrow",
             "id": 498212,
diff --git a/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHubEnterprise.swift b/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHubEnterprise.swift
index 6b3189fd..4dd35f97 100644
--- a/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHubEnterprise.swift
+++ b/Sources/DangerFixtures/DangerDSLResources/DangerDSLGitHubEnterprise.swift
@@ -543,6 +543,7 @@ public let DSLGitHubEnterpriseJSON = """
           "updated_at": "2016-08-17T15:26:15Z",
           "closed_at": "2016-08-17T15:26:14Z",
           "merged_at": "2016-08-17T15:26:14Z",
+          "mergeable": "mergeable",
           "merge_commit_sha": "e80bc6c78cd2f3524577e1401d7a460feba7a26c",
           "assignee": {
             "login": "orta",
@@ -848,9 +849,8 @@ public let DSLGitHubEnterpriseJSON = """
           },
           "author_association": "MEMBER",
           "merged": true,
-          "mergeable": null,
           "rebaseable": null,
-          "mergeable_state": "unknown",
+          "mergeable": "mergeable",
           "merged_by": {
             "login": "ashfurrow",
             "id": 498212,
diff --git a/Tests/DangerTests/GitHubTestResources/GitHubPR.swift b/Tests/DangerTests/GitHubTestResources/GitHubPR.swift
index c7ce72b1..92859a12 100644
--- a/Tests/DangerTests/GitHubTestResources/GitHubPR.swift
+++ b/Tests/DangerTests/GitHubTestResources/GitHubPR.swift
@@ -14,6 +14,7 @@ public let GitHubPRJSON = """
 "statuses_url": "https://api.github.com/repos/octocat/Hello-World/statuses/6dcb09b5b57875f334f61aebed695e2e4193db5e",
 "number": 1347,
 "state": "open",
+"mergeable": "mergeable",
 "title": "new-feature",
 "body": "Please pull these awesome changes",
 "assignee": {
diff --git a/fixtures/eidolon_609.json b/fixtures/eidolon_609.json
index 67d0031b..276020c5 100644
--- a/fixtures/eidolon_609.json
+++ b/fixtures/eidolon_609.json
@@ -845,9 +845,8 @@
           },
           "author_association": "MEMBER",
           "merged": true,
-          "mergeable": null,
+          "mergeable": "mergeable",
           "rebaseable": null,
-          "mergeable_state": "unknown",
           "merged_by": {
             "login": "ashfurrow",
             "id": 498212,