diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Release history for stack-all
 
+## 0.5.2 (2024-04-18)
+- fix parsing of ltsXX
+- use https for snapshots url
+
 ## 0.5.1 (2024-03-19)
 - update the stackage snapshots.json url
 
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@
 ### Help output
 `$ stack-all --version`
 ```
-0.5.1
+0.5.2
 ```
 `$ stack-all --help`
 ```
diff --git a/src/MajorVer.hs b/src/MajorVer.hs
--- a/src/MajorVer.hs
+++ b/src/MajorVer.hs
@@ -22,7 +22,7 @@
 maybeReadMajor "nightly" = Just Nightly
 maybeReadMajor ver
   | "lts" `isPrefixOf` ver =
-      case readMaybe (dropPrefix "-" (dropPrefix "lts-" ver)) of
+      case readMaybe (dropPrefix "-" (dropPrefix "lts" ver)) of
         Just major -> Just (LTS major)
         Nothing -> Nothing
   | "ghc" `isPrefixOf` ver =
diff --git a/src/Snapshots.hs b/src/Snapshots.hs
--- a/src/Snapshots.hs
+++ b/src/Snapshots.hs
@@ -44,7 +44,7 @@
 
 getSnapshots :: Bool -> IO Object
 getSnapshots forcerefresh =
-  getCachedJSON "stackage-snapshots" "snapshots.json" "http://www.stackage.org/download/snapshots.json" $ if forcerefresh then 0 else 200 --minutes
+  getCachedJSON "stackage-snapshots" "snapshots.json" "https://www.stackage.org/download/snapshots.json" $ if forcerefresh then 0 else 200 --minutes
 
 latestLTS :: Bool -> IO MajorVer
 latestLTS refresh = do
diff --git a/stack-all.cabal b/stack-all.cabal
--- a/stack-all.cabal
+++ b/stack-all.cabal
@@ -1,5 +1,5 @@
 name:                stack-all
-version:             0.5.1
+version:             0.5.2
 synopsis:            CLI tool for building across Stackage major versions
 description:
         Build your Haskell project over Stackage major LTS versions.