diff --git a/.circleci/config.yml b/.circleci/config.yml
index 36f0768..6071275 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -65,6 +65,11 @@ jobs:
     environment:
       - STACK_FILE: "stack-8.6.4.yaml"
     <<: *defaults
+    
+  ghc-8.6.5:
+    environment:
+      - STACK_FILE: "stack-8.6.5.yaml"
+    <<: *defaults 
 
 workflows:
   version: 2
@@ -76,3 +81,4 @@ workflows:
       - ghc-8.4.4
       - ghc-8.6.3
       - ghc-8.6.4
+      - ghc-8.6.5
diff --git a/README.md b/README.md
index 09266cf..aa1db3d 100644
--- a/README.md
+++ b/README.md
@@ -48,14 +48,20 @@ cd haskell-code-explorer
 
 To build Haskell Code Explorer Stack ([https://docs.haskellstack.org/en/stable/README/](https://docs.haskellstack.org/en/stable/README/)) is needed.
 
-At the moment Haskell Code Explorer supports GHC 8.6.4, GHC 8.6.3, GHC 8.4.4, GHC 8.4.3, GHC 8.2.2, and 8.0.2.
+At the moment Haskell Code Explorer supports GHC 8.6.5, 8.6.4, GHC 8.6.3, GHC 8.4.4, GHC 8.4.3, GHC 8.2.2, and 8.0.2.
 
-For GHC 8.6.4:
+For GHC 8.6.5:
 
 ```bash
 stack install
 ```
 
+For GHC 8.6.4:
+
+```bash
+stack --stack-yaml=stack-8.6.4.yaml install
+```
+
 For GHC 8.6.3:
 
 ```bash
diff --git a/install.hs b/install.hs
index 16ab109..6db36fa 100755
--- a/install.hs
+++ b/install.hs
@@ -41,7 +41,7 @@ import System.Process.Typed
 -- | Keep this in sync with the stack.yamls at the top level of the project.
 supportedGhcVersions :: [Version]
 supportedGhcVersions =
-  map Version ["8.0.2", "8.2.2", "8.4.3", "8.4.4", "8.6.3", "8.6.4"]
+  map Version ["8.0.2", "8.2.2", "8.4.3", "8.4.4", "8.6.3", "8.6.4","8.6.5"]
 
 newtype Version = Version { unVersion :: String } deriving Eq
 
diff --git a/src/HaskellCodeExplorer/PackageInfo.hs b/src/HaskellCodeExplorer/PackageInfo.hs
index 7019221..91028af 100644
--- a/src/HaskellCodeExplorer/PackageInfo.hs
+++ b/src/HaskellCodeExplorer/PackageInfo.hs
@@ -264,7 +264,12 @@ createPackageInfo packageDirectoryPath mbDistDirRelativePath sourceCodePreproces
       HCE.ComponentId . T.append "bench-" . T.pack $ name
     chComponentNameToComponentId ChSetupHsName = HCE.ComponentId "setup"
 
-#if MIN_VERSION_GLASGOW_HASKELL(8,6,4,0)
+
+
+#if MIN_VERSION_GLASGOW_HASKELL(8,6,5,0)
+ghcVersion :: Version
+ghcVersion = Version {versionBranch = [8, 6, 5, 0], versionTags = []}
+#elif MIN_VERSION_GLASGOW_HASKELL(8,6,4,0)
 ghcVersion :: Version
 ghcVersion = Version {versionBranch = [8, 6, 4, 0], versionTags = []}
 #elif MIN_VERSION_GLASGOW_HASKELL(8,6,3,0)     
diff --git a/stack-8.6.5.yaml b/stack-8.6.5.yaml
new file mode 100644
index 0000000..5944fc2
--- /dev/null
+++ b/stack-8.6.5.yaml
@@ -0,0 +1,8 @@
+resolver: lts-13.20
+packages:
+- '.'
+- location: vendor/cabal-helper-0.8.1.2
+  extra-dep: true
+allow-newer: true
+extra-deps:
+  - cabal-plan-0.4.0.0
diff --git a/stack.yaml b/stack.yaml
index dc6a90a..5944fc2 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-13.12
+resolver: lts-13.20
 packages:
 - '.'
 - location: vendor/cabal-helper-0.8.1.2
diff --git a/test/Main.hs b/test/Main.hs
index e4bd4f0..13bbe29 100644
--- a/test/Main.hs
+++ b/test/Main.hs
@@ -155,9 +155,11 @@ moduleInfoSpec modInfo =
       HCE.idOccMap (modInfo :: HCE.ModuleInfo) `shouldBe` testIdOccMap
 
 stackYamlArg :: [String]
-#if MIN_VERSION_GLASGOW_HASKELL(8,6,4,0)
+#if MIN_VERSION_GLASGOW_HASKELL(8,6,5,0)
 stackYamlArg = []
-#elif MIN_VERSION_GLASGOW_HASKELL(8,6,1,0)
+#elif MIN_VERSION_GLASGOW_HASKELL(8,6,4,0)
+stackYamlArg = ["--stack-yaml=stack-8.6.4.yaml"]
+#elif MIN_VERSION_GLASGOW_HASKELL(8,6,3,0)
 stackYamlArg = ["--stack-yaml=stack-8.6.3.yaml"]
 #elif MIN_VERSION_GLASGOW_HASKELL(8,4,4,0)
 stackYamlArg = ["--stack-yaml=stack-8.4.4.yaml"]
diff --git a/test/test-package/stack-8.6.4.yaml b/test/test-package/stack-8.6.4.yaml
new file mode 100644
index 0000000..88f5e2c
--- /dev/null
+++ b/test/test-package/stack-8.6.4.yaml
@@ -0,0 +1 @@
+resolver: lts-13.12
diff --git a/test/test-package/stack-8.6.5.yaml b/test/test-package/stack-8.6.5.yaml
new file mode 100644
index 0000000..f9ebe57
--- /dev/null
+++ b/test/test-package/stack-8.6.5.yaml
@@ -0,0 +1 @@
+resolver: lts-13.20
diff --git a/test/test-package/stack.yaml b/test/test-package/stack.yaml
index 88f5e2c..f9ebe57 100644
--- a/test/test-package/stack.yaml
+++ b/test/test-package/stack.yaml
@@ -1 +1 @@
-resolver: lts-13.12
+resolver: lts-13.20