diff --git a/package.yaml b/package.yaml
index 84be92a..69aadd1 100644
--- a/package.yaml
+++ b/package.yaml
@@ -68,7 +68,7 @@ dependencies:
 
 # instances
 - rerefined ^>= 0.5.0
-- vector-sized ^>= 1.5.0
+- vector-sized >= 1.5.0 && < 1.7
 - vector >= 0.12.3.1 && < 0.14
 
 library:
diff --git a/strongweak.cabal b/strongweak.cabal
index 26924eb..e823f24 100644
--- a/strongweak.cabal
+++ b/strongweak.cabal
@@ -62,7 +62,7 @@ library
     , text >=1.2.5.0 && <2.2
     , text-builder-linear >=0.1.2 && <0.2
     , vector >=0.12.3.1 && <0.14
-    , vector-sized >=1.5.0 && <1.6
+    , vector-sized >=1.5.0 && <1.7
   default-language: GHC2021
 
 test-suite spec
@@ -100,5 +100,5 @@ test-suite spec
     , text >=1.2.5.0 && <2.2
     , text-builder-linear >=0.1.2 && <0.2
     , vector >=0.12.3.1 && <0.14
-    , vector-sized >=1.5.0 && <1.6
+    , vector-sized >=1.5.0 && <1.7
   default-language: GHC2021