diff --git a/bluefin-opaleye/CHANGELOG.md b/bluefin-opaleye/CHANGELOG.md
index 778f8e4..4a67fe8 100644
--- a/bluefin-opaleye/CHANGELOG.md
+++ b/bluefin-opaleye/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Haskell Package Versioning Policy](https://pvp.hask
 ### Changed
 - Support `bluefin` versions `0.2.7 && < 0.6` in [#4](https://github.com/fpringle/bluefin-postgresql/pull/4).
 - Extract common operation counting code to [postgresql-operation-counting](https://github.com/fpringle/postgresql-operation-counting) in [#6](https://github.com/fpringle/bluefin-postgresql/pull/6). Breaking change.
+- Support `bluefin < 0.11` in [#8](https://github.com/fpringle/bluefin-postgresql/pull/8).
 
 ## [0.1.0.0] - 27.02.2026
 
diff --git a/bluefin-opaleye/bluefin-opaleye.cabal b/bluefin-opaleye/bluefin-opaleye.cabal
index 9e41548..d09e83e 100644
--- a/bluefin-opaleye/bluefin-opaleye.cabal
+++ b/bluefin-opaleye/bluefin-opaleye.cabal
@@ -33,7 +33,7 @@ common warnings
 common deps
   build-depends:
     , base >= 4 && < 5
-    , bluefin >= 0.2.7 && < 0.6
+    , bluefin >= 0.2.7 && < 0.11
     , opaleye >= 0.9 && < 0.11
     , product-profunctors >= 0.9 && < 0.12
     , bluefin-postgresql >= 0.1 && < 0.2
diff --git a/bluefin-postgresql/CHANGELOG.md b/bluefin-postgresql/CHANGELOG.md
index bb925e1..75bf60d 100644
--- a/bluefin-postgresql/CHANGELOG.md
+++ b/bluefin-postgresql/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Haskell Package Versioning Policy](https://pvp.hask
 
 - Support `bluefin` versions `0.2.7 && < 0.6` in [#4](https://github.com/fpringle/bluefin-postgresql/pull/4).
 - Dynamic `PostgreSQL` effect in [#7](https://github.com/fpringle/bluefin-postgresql/pull/7).
+- Support `bluefin < 0.11` in [#8](https://github.com/fpringle/bluefin-postgresql/pull/8).
 
 ## [0.1.0.0] - 27.02.2026
 
diff --git a/bluefin-postgresql/bluefin-postgresql.cabal b/bluefin-postgresql/bluefin-postgresql.cabal
index c592203..1ca86b2 100644
--- a/bluefin-postgresql/bluefin-postgresql.cabal
+++ b/bluefin-postgresql/bluefin-postgresql.cabal
@@ -43,7 +43,7 @@ common warnings
 common deps
   build-depends:
     , base >= 4 && < 5
-    , bluefin >= 0.2.7 && < 0.6
+    , bluefin >= 0.2.7 && < 0.11
     , postgresql-simple >= 0.7 && < 0.8
 
   if flag(enable-pool)
diff --git a/nix/nixpkgs.nix b/nix/nixpkgs.nix
index 4be52ec..c6300e6 100644
--- a/nix/nixpkgs.nix
+++ b/nix/nixpkgs.nix
@@ -17,7 +17,8 @@ let
 
       haskell-overrides = hfinal: hprev:
         let
-          bluefin = sources."bluefin-0.5.1.0";
+          bluefin = sources."bluefin-0.10.0.0";
+          # bluefin = sources."bluefin-0.5.1.0";
           # bluefin = sources."bluefin-0.2.7.0";
 
           packageOverrides = {
diff --git a/nix/sources.json b/nix/sources.json
index 79cb41a..2ff249d 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -23,6 +23,18 @@
         "url": "https://github.com/tomjaguarpaw/bluefin/archive/262738baf5891ec9d797470e2d3a9a958ad9c0f6.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
+    "bluefin-0.10.0.0": {
+        "branch": "master",
+        "description": null,
+        "homepage": null,
+        "owner": "tomjaguarpaw",
+        "repo": "bluefin",
+        "rev": "bb0b5fd91a895605cc6535658a269e95582ffeaf",
+        "sha256": "0clycqpp9vz01gyjjrvnwws185616sg3dz75xi4hnxym0vx9vzg4",
+        "type": "tarball",
+        "url": "https://github.com/tomjaguarpaw/bluefin/archive/bb0b5fd91a895605cc6535658a269e95582ffeaf.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
     "nixpkgs": {
         "branch": "nixos-unstable",
         "description": "Nix Packages collection",