diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for reflex-gadt-api
 
+## 0.2.1.0
+
+* Use "some" instead of "dependent-sum" package
+
 ## 0.2.0.1
 
 * Fix haddocks of `tagRequests`
diff --git a/reflex-gadt-api.cabal b/reflex-gadt-api.cabal
--- a/reflex-gadt-api.cabal
+++ b/reflex-gadt-api.cabal
@@ -1,6 +1,6 @@
 cabal-version:      >=1.10
 name:               reflex-gadt-api
-version:            0.2.0.1
+version:            0.2.1.0
 synopsis:           Interact with a GADT API in your reflex-dom application.
 description:
   This package is designed to be used in full-stack Haskell applications where the API is defined as a GADT and the frontend is using reflex-dom.
@@ -30,10 +30,10 @@
     , constraints-extras  >=0.3.0  && <0.4
     , containers          >=0.6    && <0.7
     , data-default        >=0.6    && <0.8
-    , dependent-sum       >=0.6.2  && <0.7
     , jsaddle             >=0.9.7  && <0.10
-    , reflex              >=0.7    && <0.8
+    , reflex              >=0.7    && <0.9
     , reflex-dom-core     >=0.6.0  && <0.7
+    , some                >=1      && <1.1
     , text                >=1.2    && <1.3
     , time                >=1.6.0  && <2