diff --git a/exe/Main.hs b/exe/Main.hs
index 813b2a771..35692ebc9 100644
--- a/exe/Main.hs
+++ b/exe/Main.hs
@@ -175,7 +175,7 @@ showEvent lock (EventFileDiagnostics (toNormalizedFilePath -> file) diags) =
 showEvent lock e = withLock lock $ print e
 
 
-cradleToSession :: Cradle -> IO HscEnvEq
+cradleToSession :: Cradle a -> IO HscEnvEq
 cradleToSession cradle = do
     cradleRes <- getCompilerOptions "" cradle
     opts <- case cradleRes of
diff --git a/ghcide.cabal b/ghcide.cabal
index ed532d656..0b8503aaa 100644
--- a/ghcide.cabal
+++ b/ghcide.cabal
@@ -177,7 +177,7 @@ executable ghcide
         ghc,
         gitrev,
         haskell-lsp,
-        hie-bios >= 0.3.2 && < 0.4,
+        hie-bios >= 0.4.0 && < 0.5,
         ghcide,
         optparse-applicative,
         shake,
diff --git a/stack-ghc-lib.yaml b/stack-ghc-lib.yaml
index abb37670e..6d8ec639e 100644
--- a/stack-ghc-lib.yaml
+++ b/stack-ghc-lib.yaml
@@ -5,7 +5,7 @@ extra-deps:
 - haskell-lsp-0.19.0.0
 - haskell-lsp-types-0.19.0.0
 - lsp-test-0.10.0.0
-- hie-bios-0.3.2
+- hie-bios-0.4.0
 - ghc-lib-parser-8.8.1
 - ghc-lib-8.8.1
 - fuzzy-0.1.0.0
diff --git a/stack.yaml b/stack.yaml
index 77820c919..389c662a3 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -5,7 +5,7 @@ extra-deps:
 - haskell-lsp-0.19.0.0
 - haskell-lsp-types-0.19.0.0
 - lsp-test-0.10.0.0
-- hie-bios-0.3.2
+- hie-bios-0.4.0
 - fuzzy-0.1.0.0
 - regex-pcre-builtin-0.95.1.1.8.43
 - regex-base-0.94.0.0
diff --git a/stack84.yaml b/stack84.yaml
index e2c15786e..6fdc6ca7c 100644
--- a/stack84.yaml
+++ b/stack84.yaml
@@ -3,15 +3,18 @@ packages:
 - .
 
 extra-deps:
+- aeson-1.4.6.0
+- base-orphans-0.8.2
 - haskell-lsp-0.19.0.0
 - haskell-lsp-types-0.19.0.0
 - lsp-test-0.10.0.0
 - rope-utf16-splay-0.3.1.0
 - filepattern-0.1.1
 - js-dgtable-0.5.2
-- hie-bios-0.3.2
+- hie-bios-0.4.0
 - fuzzy-0.1.0.0
 - shake-0.18.4
+- time-compat-1.9.2.2
 - regex-base-0.94.0.0
 - regex-tdfa-1.3.1.0
 - parser-combinators-1.2.1
diff --git a/stack88.yaml b/stack88.yaml
index 539004113..3e79428d2 100644
--- a/stack88.yaml
+++ b/stack88.yaml
@@ -3,6 +3,7 @@ packages:
 - .
 extra-deps:
 - fuzzy-0.1.0.0
+- hie-bios-0.4.0
 allow-newer: true
 nix:
   packages: [zlib]