diff --git a/cabal.project b/cabal.project
index 989077c60..ac7bd6ae2 100644
--- a/cabal.project
+++ b/cabal.project
@@ -9,12 +9,6 @@ packages:
   -- ../miso-bulma
 
 allow-newer:
-    vector-circular:vector,
-    vector-circular:base,
-    vector-circular:template-haskell,
-    vector-circular:semigroupoids,
-    vector-circular:primitive,
-    vector-circular:deepseq,
     pretty:deepseq,
     pretty:dlist,
     geojson:deepseq,
@@ -51,10 +45,6 @@ source-repository-package
 --     location: https://github.com/noinia/miso
 --     tag: 1d16ba220bcd6be28d1e89d141330cd6875c70ff
 
-source-repository-package
-    type: git
-    location: https://github.com/noinia/vector-circular
-    tag: 98090784e9ed97cf761cf69ad3f32b88dbdd30a2
 
 package miso
     flags: +jsaddle
diff --git a/hgeometry-combinatorial/hgeometry-combinatorial.cabal b/hgeometry-combinatorial/hgeometry-combinatorial.cabal
index bc590e06a..34718f210 100644
--- a/hgeometry-combinatorial/hgeometry-combinatorial.cabal
+++ b/hgeometry-combinatorial/hgeometry-combinatorial.cabal
@@ -44,7 +44,6 @@ common setup
       , vector-builder           >= 0.3.7       && < 1
       , vector-algorithms        >= 0.8         && < 1
       , nonempty-vector          >= 0.2.3       && < 1
-      , vector-circular          >= 0.1.4       && < 1
       , linear                   >= 1.20        && < 2
       , HsYAML                   >= 0.2         &&  < 1
       , aeson                    >= 2.0         && < 3
diff --git a/hgeometry-combinatorial/src/HGeometry/Cyclic.hs b/hgeometry-combinatorial/src/HGeometry/Cyclic.hs
index 0b72dd95a..dfec82ae7 100644
--- a/hgeometry-combinatorial/src/HGeometry/Cyclic.hs
+++ b/hgeometry-combinatorial/src/HGeometry/Cyclic.hs
@@ -13,7 +13,6 @@
 --------------------------------------------------------------------------------
 module HGeometry.Cyclic
   ( Cyclic(..)
-  , toCircularVector
   , HasDirectedTraversals(..)
   , ShiftedEq(..)
   ) where
@@ -29,7 +28,6 @@ import qualified Data.List.NonEmpty as NonEmpty
 import           Data.Maybe (isJust)
 import           Data.Semigroup.Foldable
 import qualified Data.Vector as V
-import           Data.Vector.Circular (CircularVector(..))
 import qualified Data.Vector.Mutable as MV
 import qualified Data.Vector.NonEmpty as NV
 import           GHC.Generics (Generic)
@@ -78,11 +76,6 @@ instance (Index (v a) ~ Int, Foldable v, Ixed (v a)) => Ixed (Cyclic v a) where
 instance Reversing (v a) => Reversing (Cyclic v a) where
   reversing (Cyclic v) = Cyclic (reversing v)
 
--- | Turn the cyclic vector into a circular Vector
-toCircularVector            :: Cyclic NV.NonEmptyVector a -> CircularVector a
-toCircularVector (Cyclic v) = CircularVector v 0
-
-
 -- | Class that models that some type has a cyclic traversal starting
 -- from a particular index.
 class HasDirectedTraversals v where
diff --git a/hgeometry/src/HGeometry/Polygon/Convex/Tangents.hs b/hgeometry/src/HGeometry/Polygon/Convex/Tangents.hs
index bbf8f8b4d..9c50d44c4 100644
--- a/hgeometry/src/HGeometry/Polygon/Convex/Tangents.hs
+++ b/hgeometry/src/HGeometry/Polygon/Convex/Tangents.hs
@@ -23,15 +23,13 @@ import           Data.Monoid
 import           Data.Ord (comparing)
 import           Data.Semigroup.Foldable (Foldable1 (..))
 import           HGeometry.Ext
--- import           Data.Vector.Circular (CircularVector)
--- import qualified Data.Vector.Circular as CV
--- import qualified Data.Vector.Circular.Util as CV
 import           HGeometry.LineSegment
 import           HGeometry.Point
 import           HGeometry.Polygon.Class
 import           HGeometry.Polygon.Convex.Class
-import           HGeometry.Vector
 import           HGeometry.Polygon.Convex.Implementation (findMaxWith)
+import           HGeometry.Vector
+
 --------------------------------------------------------------------------------
 
 -- | Given a convex polygon poly, and a point outside the polygon, find the