diff --git a/pkgs/servers/sql/postgresql/ext/pg_search.nix b/pkgs/servers/sql/postgresql/ext/pg_search.nix
index ac0e62bdcfa1..55c7427e1d28 100644
--- a/pkgs/servers/sql/postgresql/ext/pg_search.nix
+++ b/pkgs/servers/sql/postgresql/ext/pg_search.nix
@@ -9,79 +9,73 @@
   postgresql,
 }:
 
-let
-  # https://github.com/paradedb/paradedb/blob/v0.22.1/Cargo.lock#L4239-L4269
-  linderaVersion = "1.4.1";
-  linderaWebsite = "https://lindera.dev";
-
-  # pg_search's tokenizer uses several language dictionaries used by the Lindera crate
-  dictionaries = {
-    # https://github.com/lindera/lindera/blob/v1.4.1/lindera-ko-dic/build.rs#L15-L22
-    lindera-ko-dic = rec {
-      language = "Korean";
-      filename = "mecab-ko-dic-2.1.1-20180720.tar.gz";
-      source = fetchurl {
-        url = "${linderaWebsite}/${filename}";
-        hash = "sha256-cCztIcYWfp2a68Z0q17lSvWNREOXXylA030FZ8AgWRo=";
-      };
-    };
-
-    # https://github.com/lindera/lindera/blob/v1.4.1/lindera-cc-cedict/build.rs#L15-L22
-    lindera-cc-cedict = rec {
-      language = "Chinese";
-      filename = "CC-CEDICT-MeCab-0.1.0-20200409.tar.gz";
-      source = fetchurl {
-        url = "${linderaWebsite}/${filename}";
-        hash = "sha256-7Tz54+yKgGR/DseD3Ana1DuMytLplPXqtv8TpB0JFsg=";
-      };
-    };
-
-    # https://github.com/lindera/lindera/blob/v1.4.1/lindera-ipadic/build.rs#L15-L22
-    lindera-ipadic = rec {
-      language = "Japanese";
-      filename = "mecab-ipadic-2.7.0-20250920.tar.gz";
-      source = fetchurl {
-        url = "${linderaWebsite}/${filename}";
-        hash = "sha256-p7qfZF/+cJTlauHEqB0QDfj7seKLvheSYi6XKOFi2z0=";
-      };
-    };
-  };
-in
 buildPgrxExtension (finalAttrs: {
   pname = "pg_search";
-  version = "0.22.4";
+  version = "0.22.5";
 
   src = fetchFromGitHub {
     owner = "paradedb";
     repo = "paradedb";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-WPkgVqrA2mOgj7IGh/GSjpJoLP7usdUWbFVY1SqGHq4=";
+    hash = "sha256-b5sdKEWy4/uXLIE6HtcRMihtRK9iO9jM8pvktO3rOUU=";
   };
 
-  cargoHash = "sha256-f8/5wDle97O3RoIvM+iPWeEzfASsaQm2k8YnaYg32Do=";
+  cargoHash = "sha256-Umbx1ZrQEYifp09+unfaN/MBcbSq16NcqhP6h703Sb8=";
 
   inherit postgresql;
 
-  # Lindera dictionaries are copied to a temporary directory and the
-  # LINDERA_CACHE environment variable prevents the build.rs files in
-  # the Lindera crates from downloading their dictionary from an
-  # external URL, which doesn't work in the Nix sandbox
-  preConfigure = ''
-    export LINDERA_CACHE=$TMPDIR/lindera-cache
-    mkdir -p $LINDERA_CACHE/${linderaVersion}
+  preConfigure =
+    let
+      # Lindera dictionaries are copied to a temporary directory and the
+      # LINDERA_CACHE environment variable prevents the build.rs files in
+      # the Lindera crates from downloading their dictionary from an
+      # external URL, which doesn't work in the Nix sandbox.
 
-    ${lib.concatMapStringsSep "\n" (dict: ''
-      echo "Copying ${dict.language} dictionary to Lindera cache"
-      cp ${dict.source} $LINDERA_CACHE/${linderaVersion}/${dict.filename}
-    '') (lib.attrValues dictionaries)}
+      # You can see which Lindera version pg_search is using here:
+      # https://github.com/paradedb/paradedb/tree/${version}/Cargo.lock
+      linderaVersion = "1.5.1";
 
-    echo "Lindera cache prepared at $LINDERA_CACHE"
-  '';
+      # pg_search's tokenizer uses several language dictionaries used by the Lindera crate
+      # Check the relevant build.rs files to get the proper URLs:
+      # https://github.com/lindera/lindera/blob/${linderaVersion}/${dictionaryKey}/build.rs
+      # Here's an example URL:
+      # https://github.com/lindera/lindera/blob/v1.5.1/lindera-cc-cedict/build.rs
 
-  # https://github.com/paradedb/paradedb/blob/v0.22.1/Cargo.toml#L38-L39
+      dict = language: filename: hash: {
+        inherit filename language;
+        source = fetchurl {
+          url = "https://lindera.dev/${filename}";
+          inherit hash;
+        };
+      };
+
+      dictionaries = {
+        lindera-ko-dic =
+          dict "Korean" "mecab-ko-dic-2.1.1-20180720.tar.gz"
+            "sha256-cCztIcYWfp2a68Z0q17lSvWNREOXXylA030FZ8AgWRo=";
+        lindera-cc-cedict =
+          dict "Chinese" "CC-CEDICT-MeCab-0.1.0-20200409.tar.gz"
+            "sha256-7Tz54+yKgGR/DseD3Ana1DuMytLplPXqtv8TpB0JFsg=";
+        lindera-ipadic =
+          dict "Japanese" "mecab-ipadic-2.7.0-20250920.tar.gz"
+            "sha256-p7qfZF/+cJTlauHEqB0QDfj7seKLvheSYi6XKOFi2z0=";
+      };
+    in
+    ''
+      export LINDERA_CACHE=$TMPDIR/lindera-cache
+      mkdir -p $LINDERA_CACHE/${linderaVersion}
+      ${lib.concatMapStringsSep "\n" (dict: ''
+        echo "Copying ${dict.language} dictionary to Lindera cache"
+        cp ${dict.source} $LINDERA_CACHE/${linderaVersion}/${dict.filename}
+      '') (lib.attrValues dictionaries)}
+      echo "Lindera cache prepared at $LINDERA_CACHE"
+    '';
+
+  # To determinate which version of cargo-pgrx to use, consult the project's main Cargo.toml:
+  # https://github.com/paradedb/paradedb/tree/${version}/Cargo.toml
+  # In that file, check the version of pgrx and pgrx-tests under workspace.dependencies
   cargo-pgrx = cargo-pgrx_0_17_0;
 
-  # https://github.com/paradedb/paradedb/tree/v0.22.1/pg_search
   cargoPgrxFlags = [
     "--package"
     "pg_search"
@@ -102,7 +96,8 @@ buildPgrxExtension (finalAttrs: {
     changelog = "https://github.com/paradedb/paradedb/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.agpl3Only;
     maintainers = [ lib.maintainers.lucperkins ];
-    # https://github.com/paradedb/paradedb/blob/v0.22.1/pg_search/Cargo.toml#L14-L17
+    # For a list of versions, look under the features dictionary in:
+    # https://github.com/paradedb/paradedb/tree/${version}/pg_search/Cargo.toml
     broken = lib.versionOlder postgresql.version "15";
     platforms = postgresql.meta.platforms;
   };