diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 1668c4a0b2..39219b7e15 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -3553,41 +3553,71 @@ (define-public rust-askama-escape-0.10
 extracted from Askama.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-askama-shared-0.12
+  (package
+    (name "rust-askama-shared")
+    (version "0.12.2")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "askama_shared" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32
+                "1l4fycmw65zyvfabf672sj2pc0ilfcj0y6a0csygq1wa26a2nwmz"))))
+    (build-system cargo-build-system)
+    (arguments
+     (list #:skip-build? #t
+           #:cargo-inputs
+           `(("rust-askama-escape" ,rust-askama-escape-0.10)
+             ("rust-comrak" ,rust-comrak-0.12)
+             ("rust-humansize" ,rust-humansize-1)
+             ("rust-mime" ,rust-mime-0.3)
+             ("rust-mime-guess" ,rust-mime-guess-2)
+             ("rust-nom" ,rust-nom-7)
+             ("rust-num-traits" ,rust-num-traits-0.2)
+             ("rust-percent-encoding"
+              ,rust-percent-encoding-2)
+             ("rust-proc-macro2" ,rust-proc-macro2-1)
+             ("rust-quote" ,rust-quote-1)
+             ("rust-serde" ,rust-serde-1)
+             ("rust-serde-json" ,rust-serde-json-1)
+             ("rust-serde-yaml" ,rust-serde-yaml-0.8)
+             ("rust-syn" ,rust-syn-1)
+             ("rust-toml" ,rust-toml-0.5))))
+    (home-page "https://github.com/djc/askama")
+    (synopsis "Shared code for Askama")
+    (description "This package provides shared code for Askama.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-askama-shared-0.11
   (package
+    (inherit rust-askama-shared-0.12)
     (name "rust-askama-shared")
     (version "0.11.1")
     (source
      (origin
        (method url-fetch)
        (uri (crate-uri "askama_shared" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
+       (file-name (string-append name "-" version ".tar.gz"))
        (sha256
-        (base32
-         "1g3ksf5is0qwx9rd5lxn5gbvxfcpby5gl9cahg26wl1w1xzbg0i5"))))
-    (build-system cargo-build-system)
+        (base32 "1g3ksf5is0qwx9rd5lxn5gbvxfcpby5gl9cahg26wl1w1xzbg0i5"))))
     (arguments
-     `(#:skip-build? #t
-       #:cargo-inputs
-       (("rust-askama-escape" ,rust-askama-escape-0.10)
-        ("rust-humansize" ,rust-humansize-1)
-        ("rust-nom" ,rust-nom-6)
-        ("rust-num-traits" ,rust-num-traits-0.2)
-        ("rust-percent-encoding"
-         ,rust-percent-encoding-2)
-        ("rust-proc-macro2" ,rust-proc-macro2-1)
-        ("rust-quote" ,rust-quote-1)
-        ("rust-serde" ,rust-serde-1)
-        ("rust-serde-derive" ,rust-serde-derive-1)
-        ("rust-serde-json" ,rust-serde-json-1)
-        ("rust-serde-yaml" ,rust-serde-yaml-0.8)
-        ("rust-syn" ,rust-syn-1)
-        ("rust-toml" ,rust-toml-0.5))))
-    (home-page "https://github.com/djc/askama")
-    (synopsis "Shared code for Askama")
-    (description "This package provides a shared code for Askama.")
-    (license (list license:expat license:asl2.0))))
+     (list #:skip-build? #t
+           #:cargo-inputs
+           `(("rust-askama-escape" ,rust-askama-escape-0.10)
+             ("rust-humansize" ,rust-humansize-1)
+             ("rust-nom" ,rust-nom-6)
+             ("rust-num-traits" ,rust-num-traits-0.2)
+             ("rust-percent-encoding"
+              ,rust-percent-encoding-2)
+             ("rust-proc-macro2" ,rust-proc-macro2-1)
+             ("rust-quote" ,rust-quote-1)
+             ("rust-serde" ,rust-serde-1)
+             ("rust-serde-derive" ,rust-serde-derive-1)
+             ("rust-serde-json" ,rust-serde-json-1)
+             ("rust-serde-yaml" ,rust-serde-yaml-0.8)
+             ("rust-syn" ,rust-syn-1)
+             ("rust-toml" ,rust-toml-0.5))))))
 
 (define-public rust-askama-derive-0.10
   (package