diff --git a/doc/manual/source/command-ref/nix-hash.md b/doc/manual/source/command-ref/nix-hash.md
index f249c2b84..0860f312d 100644
--- a/doc/manual/source/command-ref/nix-hash.md
+++ b/doc/manual/source/command-ref/nix-hash.md
@@ -67,7 +67,7 @@ md5sum`.
 - `--type` *hashAlgo*
 
   Use the specified cryptographic hash algorithm, which can be one of
-  `md5`, `sha1`, `sha256`, and `sha512`.
+  `blake3`, `md5`, `sha1`, `sha256`, and `sha512`.
 
 - `--to-base16`
 
diff --git a/doc/manual/source/command-ref/nix-prefetch-url.md b/doc/manual/source/command-ref/nix-prefetch-url.md
index ffab94b8a..19322ec8e 100644
--- a/doc/manual/source/command-ref/nix-prefetch-url.md
+++ b/doc/manual/source/command-ref/nix-prefetch-url.md
@@ -42,7 +42,7 @@ the path of the downloaded file in the Nix store is also printed.
 - `--type` *hashAlgo*
 
   Use the specified cryptographic hash algorithm,
-  which can be one of `md5`, `sha1`, `sha256`, and `sha512`.
+  which can be one of `blake3`, `md5`, `sha1`, `sha256`, and `sha512`.
   The default is `sha256`.
 
 - `--print-path`
diff --git a/doc/manual/source/language/advanced-attributes.md b/doc/manual/source/language/advanced-attributes.md
index 51b83fc8a..c384e956a 100644
--- a/doc/manual/source/language/advanced-attributes.md
+++ b/doc/manual/source/language/advanced-attributes.md
@@ -192,7 +192,7 @@ Derivations can declare some infrequently used optional attributes.
     The [`convertHash`](@docroot@/language/builtins.md#builtins-convertHash) function shows how to convert between different encodings, and the [`nix-hash` command](../command-ref/nix-hash.md) has information about obtaining the hash for some contents, as well as converting to and from encodings.
 
     The `outputHashAlgo` attribute specifies the hash algorithm used to compute the hash.
-    It can currently be `"sha1"`, `"sha256"`, `"sha512"`, or `null`.
+    It can currently be `"blake3", "sha1"`, `"sha256"`, `"sha512"`, or `null`.
     `outputHashAlgo` can only be `null` when `outputHash` follows the SRI format.
 
     The `outputHashMode` attribute determines how the hash is computed.
diff --git a/doc/manual/source/protocols/json/derivation.md b/doc/manual/source/protocols/json/derivation.md
index 2f85340d6..3845f1200 100644
--- a/doc/manual/source/protocols/json/derivation.md
+++ b/doc/manual/source/protocols/json/derivation.md
@@ -38,6 +38,7 @@ is a JSON object with the following fields:
     For an output which will be [content addresed], the name of the hash algorithm used.
     Valid algorithm strings are:
 
+    - `blake3`
     - `md5`
     - `sha1`
     - `sha256`