diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index a06caa41064..066830814fd 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -659,9 +659,7 @@ self: super: builtins.intersectAttrs super {
     let
       # spago requires an older version of megaparsec, but it appears to work
       # fine with newer versions.
-      spagoWithOverrides = doJailbreak (super.spago.override {
-        dhall = self.dhall_1_37_1;
-      });
+      spagoWithOverrides = doJailbreak super.spago;
 
       # This defines the version of the purescript-docs-search release we are using.
       # This is defined in the src/Spago/Prelude.hs file in the spago source.
diff --git a/pkgs/development/tools/purescript/spago/default.nix b/pkgs/development/tools/purescript/spago/default.nix
index 62e85a87487..6fef3dd8675 100644
--- a/pkgs/development/tools/purescript/spago/default.nix
+++ b/pkgs/development/tools/purescript/spago/default.nix
@@ -3,6 +3,7 @@
 , lib
 
 # The following are only needed for the passthru.tests:
+, cacert
 , git
 , nodejs
 , purescript
@@ -35,6 +36,7 @@ spago.overrideAttrs (oldAttrs: {
         {
           __noChroot = true;
           nativeBuildInputs = [
+            cacert
             git
             nodejs
             purescript
diff --git a/pkgs/development/tools/purescript/spago/spago.nix b/pkgs/development/tools/purescript/spago/spago.nix
index 58458ea79aa..eca516bbeba 100644
--- a/pkgs/development/tools/purescript/spago/spago.nix
+++ b/pkgs/development/tools/purescript/spago/spago.nix
@@ -12,11 +12,11 @@
 }:
 mkDerivation {
   pname = "spago";
-  version = "0.19.0";
+  version = "0.20.0";
   src = fetchgit {
     url = "https://github.com/purescript/spago.git";
-    sha256 = "182a9pkv64rbyqrig470cmql4ingf5vpxh11xkxqq2baxym3vwip";
-    rev = "960a310d6efca3bb40009eb06d88382e4670ccef";
+    sha256 = "1n48p9ycry8bjnf9jlcfgyxsbgn5985l4vhbwlv46kbb41ddwi51";
+    rev = "7dfd2236aff92e5ae4f7a4dc336b50a7e14e4f44";
     fetchSubmodules = true;
   };
   isLibrary = true;