diff --git a/.gitignore b/.gitignore
index 5ae1546..14d8c21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,15 +1,8 @@
-/bower_components/
 node_modules/
-/.pulp-cache/
 /output/
 /generated-docs/
-/.psc*
-/.purs*
 /.psa*
-*.swp
-*#*
 package-lock.json
 /.vscode
-yarn.lock
-/test/chanterelle/.spago
 /.spago/
+spago.lock
diff --git a/package.json b/package.json
index 4ad4996..6d58aaf 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
     "build": "spago build",
     "tidy": "purs-tidy format-in-place \"src/**/*.purs\" \"test/**/*.purs\"",
     "tidy-check": "purs-tidy check \"src/**/*.purs\" \"test/**/*.purs\"",
-    "test": "spago -x test.dhall test"
+    "test": "spago test"
   },
   "dependencies": {
     "ethjs-provider-http": "^0.1.6",
@@ -16,6 +16,6 @@
     "purescript": "^0.15.8",
     "purescript-psa": "^0.8.2",
     "purs-tidy": "^0.10.0",
-    "spago": "^0.21.0"
+    "spago": "next"
   }
 }
diff --git a/packages.dhall b/packages.dhall
deleted file mode 100644
index 5d899ff..0000000
--- a/packages.dhall
+++ /dev/null
@@ -1,62 +0,0 @@
-let upstream =
-      https://github.com/purescript/package-sets/releases/download/psc-0.15.15-20240416/packages.dhall
-        sha256:ca727657c01cc31d0e79c2113b59126b9826f4b56d20a8193be3c725599fb754
-
-let eth-core-deps =
-      https://raw.githubusercontent.com/f-o-a-m/purescript-eth-core/aaa64b175717247f0ea6fe3c35780dea02ac8e3a/packages.dhall
-        sha256:ca727657c01cc31d0e79c2113b59126b9826f4b56d20a8193be3c725599fb754
-
-let additions =
-      { coroutine-transducers =
-        { dependencies =
-          [ "console"
-          , "either"
-          , "foldable-traversable"
-          , "freet"
-          , "functors"
-          , "newtype"
-          , "parallel"
-          , "prelude"
-          , "tailrec"
-          , "transformers"
-          , "tuples"
-          , "aff"
-          , "coroutines"
-          , "effect"
-          , "maybe"
-          , "psci-support"
-          ]
-        , repo = "https://github.com/martyall/purescript-coroutine-transducers"
-        , version = "v1.0.0"
-        }
-      , eth-core =
-        { dependencies =
-          [ "argonaut"
-          , "arrays"
-          , "effect"
-          , "either"
-          , "foldable-traversable"
-          , "foreign"
-          , "functions"
-          , "gen"
-          , "integers"
-          , "js-bigints"
-          , "lists"
-          , "maybe"
-          , "newtype"
-          , "node-buffer"
-          , "nonempty"
-          , "ordered-collections"
-          , "partial"
-          , "prelude"
-          , "simple-json"
-          , "strings"
-          , "unfoldable"
-          , "unsafe-coerce"
-          ]
-        , repo = "https://github.com/f-o-a-m/purescript-eth-core"
-        , version = "v10.1.0"
-        }
-      }
-
-in  upstream // additions
diff --git a/spago.dhall b/spago.dhall
deleted file mode 100644
index c4a9f67..0000000
--- a/spago.dhall
+++ /dev/null
@@ -1,44 +0,0 @@
-{ name = "web3"
-, dependencies =
-  [ "aff"
-  , "argonaut"
-  , "arrays"
-  , "bifunctors"
-  , "control"
-  , "coroutine-transducers"
-  , "coroutines"
-  , "effect"
-  , "either"
-  , "eth-core"
-  , "exceptions"
-  , "foldable-traversable"
-  , "foreign"
-  , "foreign-object"
-  , "fork"
-  , "gen"
-  , "heterogeneous"
-  , "identity"
-  , "maybe"
-  , "newtype"
-  , "node-buffer"
-  , "parallel"
-  , "parsing"
-  , "partial"
-  , "prelude"
-  , "profunctor-lenses"
-  , "record"
-  , "ring-modules"
-  , "simple-json"
-  , "strings"
-  , "tagged"
-  , "tailrec"
-  , "transformers"
-  , "tuples"
-  , "typelevel-prelude"
-  , "unfoldable"
-  , "unsafe-coerce"
-  , "variant"
-  ]
-, packages = ./packages.dhall
-, sources = [ "src/**/*.purs" ]
-}
diff --git a/spago.yaml b/spago.yaml
new file mode 100644
index 0000000..f66cf61
--- /dev/null
+++ b/spago.yaml
@@ -0,0 +1,96 @@
+package:
+  name: web3
+  dependencies:
+    - aff: ">=7.1.0 <8.0.0"
+    - argonaut: ">=9.0.0 <10.0.0"
+    - arrays: ">=7.3.0 <8.0.0"
+    - bifunctors: ">=6.0.0 <7.0.0"
+    - control: ">=6.0.0 <7.0.0"
+    - coroutine-transducers: "*"
+    - coroutines: ">=7.0.0 <8.0.0"
+    - effect: ">=4.0.0 <5.0.0"
+    - either: ">=6.1.0 <7.0.0"
+    - eth-core: "*"
+    - exceptions: ">=6.1.0 <7.0.0"
+    - foldable-traversable: ">=6.0.0 <7.0.0"
+    - foreign: ">=7.0.0 <8.0.0"
+    - foreign-object: ">=4.1.0 <5.0.0"
+    - fork: ">=6.0.0 <7.0.0"
+    - gen: ">=4.0.0 <5.0.0"
+    - heterogeneous: ">=0.6.0 <0.7.0"
+    - identity: ">=6.0.0 <7.0.0"
+    - maybe: ">=6.0.0 <7.0.0"
+    - newtype: ">=5.0.0 <6.0.0"
+    - node-buffer: ">=9.0.0 <10.0.0"
+    - parallel: ">=6.0.0 <7.0.0"
+    - parsing: ">=10.2.0 <11.0.0"
+    - partial: ">=4.0.0 <5.0.0"
+    - prelude: ">=6.0.1 <7.0.0"
+    - profunctor-lenses: ">=8.0.0 <9.0.0"
+    - record: ">=4.0.0 <5.0.0"
+    - ring-modules: ">=5.0.1 <6.0.0"
+    - simple-json: ">=9.0.0 <10.0.0"
+    - strings: ">=6.0.1 <7.0.0"
+    - tagged: ">=4.0.2 <5.0.0"
+    - tailrec: ">=6.1.0 <7.0.0"
+    - transformers: ">=6.1.0 <7.0.0"
+    - tuples: ">=7.0.0 <8.0.0"
+    - typelevel-prelude: ">=7.0.0 <8.0.0"
+    - unfoldable: ">=6.0.0 <7.0.0"
+    - unsafe-coerce: ">=6.0.0 <7.0.0"
+    - variant: ">=8.0.0 <9.0.0"
+  test:
+    main: Test.Main
+    dependencies:
+      - quickcheck
+      - quickcheck-laws
+      - spec
+      - spec-node
+workspace:
+  extraPackages:
+    coroutine-transducers:
+      dependencies:
+        - aff
+        - console
+        - coroutines
+        - effect
+        - either
+        - foldable-traversable
+        - freet
+        - functors
+        - maybe
+        - newtype
+        - parallel
+        - prelude
+        - psci-support
+        - tailrec
+        - transformers
+        - tuples
+      git: https://github.com/martyall/purescript-coroutine-transducers
+      ref: v1.0.0
+    eth-core:
+      dependencies:
+        - argonaut
+        - arrays
+        - effect
+        - either
+        - foldable-traversable
+        - foreign
+        - functions
+        - gen
+        - integers
+        - js-bigints
+        - lists
+        - maybe
+        - newtype
+        - node-buffer
+        - nonempty
+        - ordered-collections
+        - partial
+        - prelude
+        - simple-json
+        - strings
+        - unfoldable
+        - unsafe-coerce
+      git: https://github.com/f-o-a-m/purescript-eth-core
+      ref: 3db27d22f738498a1e4263f537cd25279fc88088
diff --git a/test.dhall b/test.dhall
deleted file mode 100644
index 7008b0d..0000000
--- a/test.dhall
+++ /dev/null
@@ -1,19 +0,0 @@
-let conf = ./spago.dhall
-
-in    conf
-    ⫽ { sources = conf.sources # [ "test/web3/**/*.purs" ]
-      , dependencies =
-            conf.dependencies
-          # [ "console"
-            , "enums"
-            , "identity"
-            , "integers"
-            , "lists"
-            , "node-buffer"
-            , "nonempty"
-            , "quickcheck"
-            , "quickcheck-laws"
-            , "spec"
-            , "unsafe-coerce"
-            ]
-      }