diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
-# 0.1
+## 0.2.0.1
 
-Introduction
+* Update `tasty` dependency bounds
+
+## 0.2
+
+* Changed the CVSS v2 parser and printer to omit the "CVSS:2.0/" version prefix according to the spec.
+
+## 0.1
+
+* Introduction
diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# cvss
+
+This project aims to support [Common Vulnerability Scoring System](https://www.first.org/cvss/).
+
+## Building
+
+We aim to support both regular cabal-based and nix-based builds.
diff --git a/cvss.cabal b/cvss.cabal
--- a/cvss.cabal
+++ b/cvss.cabal
@@ -1,6 +1,6 @@
 cabal-version:   2.4
 name:            cvss
-version:         0.1
+version:         0.2.0.1
 synopsis:        Common Vulnerability Scoring System.
 description:
   Use this library to parse CVSS string and compute its score.
@@ -9,8 +9,9 @@
 author:          Tristan de Cacqueray
 maintainer:      tdecacqu@redhat.com
 category:        Data
-extra-doc-files: CHANGELOG.md
-tested-with:     GHC ==8.10.7 || ==9.0.2 || ==9.2.8 || ==9.4.8 || ==9.6.3 || ==9.8.1
+extra-doc-files: CHANGELOG.md, README.md
+tested-with:
+  GHC ==8.10.7 || ==9.0.2 || ==9.2.8 || ==9.4.8 || ==9.6.6 || ==9.8.3 || ==9.10.1 || ==9.12.1
 
 library
   exposed-modules:  Security.CVSS
@@ -31,7 +32,7 @@
   build-depends:
     , base         <5
     , cvss
-    , tasty        <1.5
+    , tasty        <2
     , tasty-hunit  <1.0
     , text
 
diff --git a/src/Security/CVSS.hs b/src/Security/CVSS.hs
--- a/src/Security/CVSS.hs
+++ b/src/Security/CVSS.hs
@@ -51,6 +51,7 @@
     -- | The metrics are stored as provided by the user
     cvssMetrics :: [Metric]
   }
+  deriving stock (Eq)
 
 instance Show CVSS where
   show = Text.unpack . cvssVectorString
@@ -100,23 +101,23 @@
   { mName :: MetricShortName,
     mChar :: MetricValueChar
   }
-  deriving (Show)
+  deriving (Eq, Show)
 
 -- example CVSS string: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
 
 -- | Parse a CVSS string.
 parseCVSS :: Text -> Either CVSSError CVSS
 parseCVSS txt
-  | "CVSS:3.1/" `Text.isPrefixOf` txt = CVSS CVSS31 <$> validateComponents validateCvss31
-  | "CVSS:3.0/" `Text.isPrefixOf` txt = CVSS CVSS30 <$> validateComponents validateCvss30
-  | "CVSS:2.0/" `Text.isPrefixOf` txt = CVSS CVSS20 <$> validateComponents validateCvss20
-  | otherwise = Left UnknownVersion
+  | "CVSS:3.1/" `Text.isPrefixOf` txt = CVSS CVSS31 <$> validateComponents True validateCvss31
+  | "CVSS:3.0/" `Text.isPrefixOf` txt = CVSS CVSS30 <$> validateComponents True validateCvss30
+  | "CVSS:" `Text.isPrefixOf` txt = Left UnknownVersion
+  | otherwise = CVSS CVSS20 <$> validateComponents False validateCvss20
   where
-    validateComponents validator = do
-      metrics <- traverse splitComponent components
+    validateComponents withPrefix validator = do
+      metrics <- traverse splitComponent $ components withPrefix
       validator metrics
 
-    components = drop 1 $ Text.split (== '/') txt
+    components withPrefix = (if withPrefix then drop 1 else id) $ Text.split (== '/') txt
     splitComponent :: Text -> Either CVSSError Metric
     splitComponent componentTxt = case Text.unsnoc componentTxt of
       Nothing -> Left EmptyComponent
@@ -147,7 +148,7 @@
 cvssShow ordered cvss = case cvssVersion cvss of
   CVSS31 -> Text.intercalate "/" ("CVSS:3.1" : components)
   CVSS30 -> Text.intercalate "/" ("CVSS:3.0" : components)
-  CVSS20 -> Text.intercalate "/" ("CVSS:2.0" : components)
+  CVSS20 -> Text.intercalate "/" components
   where
     components = map toComponent (cvssOrder (cvssMetrics cvss))
     toComponent :: Metric -> Text
diff --git a/test/Spec.hs b/test/Spec.hs
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -30,7 +30,7 @@
     , ("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", 4.0, CVSS.Medium)
     , ("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", 9.9, CVSS.Critical)
     , ("CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", 4.2, CVSS.Medium)
-    , ("CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C", 7.8, CVSS.High)
-    , ("CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C", 10, CVSS.Critical)
-    , ("CVSS:2.0/AV:L/AC:H/Au:N/C:C/I:C/A:C", 6.2, CVSS.Medium)
+    , ("AV:N/AC:L/Au:N/C:N/I:N/A:C", 7.8, CVSS.High)
+    , ("AV:N/AC:L/Au:N/C:C/I:C/A:C", 10, CVSS.Critical)
+    , ("AV:L/AC:H/Au:N/C:C/I:C/A:C", 6.2, CVSS.Medium)
     ]