diff --git a/default.nix b/default.nix
index e3b593f..d0ffd51 100644
--- a/default.nix
+++ b/default.nix
@@ -1,4 +1,4 @@
-{ci ? false, haskellCompiler ? "ghc925" }:
+{ci ? false, haskellCompiler ? "ghc927" }:
 let
   # Import the Haskell.nix library,
   haskell-src = import ((import ./nix/sources.nix)."haskell.nix") {};
@@ -17,7 +17,7 @@ let
     compiler-nix-name = haskellCompiler;
     src = haskell.haskellLib.cleanGit { name = "eventlog2html"; src = ./.; };
     modules = (if ci then ciOptions else []) ++ opts;
-    index-state = "2022-12-01T00:00:00Z";
+    index-state = "2023-03-25T00:00:00Z";
   };
 
 
diff --git a/hakyll-eventlog/site.hs b/hakyll-eventlog/site.hs
index 163348d..ef1fc79 100644
--- a/hakyll-eventlog/site.hs
+++ b/hakyll-eventlog/site.hs
@@ -19,6 +19,7 @@ import           Eventlog.Data
 import           Eventlog.Args
 import           Eventlog.VegaTemplate
 import           Eventlog.HtmlTemplate
+import           Eventlog.Ticky
 import           Text.Blaze.Html.Renderer.Text
 import           Options.Applicative
 import           Options.Applicative.Help.Types
@@ -114,9 +115,12 @@ drawEventlog :: [T.Text] -> Int -> ChartConfig -> IO T.Text
 drawEventlog args vid conf  = do
   let final_args = ["--no-include-js"] ++ args
   Run as <- handleParseResult (execParserPure defaultPrefs argsInfo (map T.unpack final_args))
-  (_, dat, _, _) <- generateJson (head $ files as) as
-  let itd = if traces conf then TraceData else NoTraceData
-  return $ TL.toStrict $ renderHtml $ renderChartWithJson itd (chartType conf) vid dat (vegaJsonText conf)
+  ty <- generateJson (head $ files as) as
+  return $ case ty of
+    HeapProfile (_, dat, _, _) ->
+      let itd = if traces conf then TraceData else NoTraceData
+      in TL.toStrict $ renderHtml $ renderChartWithJson itd (chartType conf) vid dat (vegaJsonText conf)
+    TickyProfile {} -> mempty
 
 def :: ChartConfig
 def = ChartConfig 600 500 True "category20" "set1" (AreaChart Stacked) Nothing
@@ -162,6 +166,10 @@ fullEventLogPage file = do
   -- convenient.
   Run as <- handleParseResult (execParserPure defaultPrefs argsInfo
           [file, "--no-include-js", "--include-trace-events", "--limit-detailed=100"])
-  (header, data_json, descs, closure_descs) <- generateJson file as
-  return $ templateString header data_json descs closure_descs as
+  ty <- generateJson file as
+  case ty of
+    HeapProfile (header, data_json, descs, closure_descs) ->
+      return $ templateString header data_json descs closure_descs as
+    TickyProfile (header, tallocs, ticked_per, dat) ->
+      return $ tickyTemplateString header tallocs ticked_per dat as
 
diff --git a/nix/sources.json b/nix/sources.json
index 63ef659..6b7f2c3 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -5,10 +5,10 @@
         "homepage": "https://input-output-hk.github.io/haskell.nix",
         "owner": "input-output-hk",
         "repo": "haskell.nix",
-        "rev": "1a2bea5d67a211620da2460f1e19e3f6e9018935",
-        "sha256": "1l34bq8v5lp5ji7cx06l3rw03zlis151g5apqyyfm5xanc0q160z",
+        "rev": "af82dc3e464f58f5cc90400200f703e197d52e84",
+        "sha256": "0cdbxwqd8d22dxnqx6d1060hpjk5awwp4z5v5lvavp3p8fngg9cv",
         "type": "tarball",
-        "url": "https://github.com/input-output-hk/haskell.nix/archive/1a2bea5d67a211620da2460f1e19e3f6e9018935.tar.gz",
+        "url": "https://github.com/input-output-hk/haskell.nix/archive/af82dc3e464f58f5cc90400200f703e197d52e84.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "niv": {