diff --git a/Makefile b/Makefile
index 9d435ff..8d8e3b2 100644
--- a/Makefile
+++ b/Makefile
@@ -59,7 +59,7 @@ download:
 #	Update MetaCall source with latest version
 	@sed -i '/(name "metacall")/!b;n;c\    (version "${LATEST_VERSION}")' source/metacall.scm
 #	Update MetaCall source with checksum
-	@sed -i '/(uri (string-append "https:\/\/github.com\/metacall\/core\/archive\/v" version ".tar.gz"))/!b;n;c\        (sha256 (base32 "${CHECKSUM}"))' source/metacall.scm
+	@sed -i '/"https:\/\/github.com\/metacall\/core\/archive\/v" version ".tar.gz"))/!b;n;c\        (sha256 (base32 "${CHECKSUM}"))))' source/metacall.scm
 
 # Build base Docker image
 base:
diff --git a/source/metacall.scm b/source/metacall.scm
index 5674b6f..c4f3dfe 100644
--- a/source/metacall.scm
+++ b/source/metacall.scm
@@ -236,13 +236,13 @@ for any host, on any OS. TypeScript compiles to readable, standards-based JavaSc
 (define-public metacall
   (package
     (name "metacall")
-    (version "0.7.8")
+    (version "0.8.0")
     (source
       (origin
         (method url-fetch)
         (uri (string-append
           "https://github.com/metacall/core/archive/v" version ".tar.gz"))
-        (sha256 (base32 "0p61l4dbw0ri4vsyfri2j2vl41kfz3drv21aychp7qnqjpp1i69f"))))
+        (sha256 (base32 "0ngxd5s1cah4qrkay8fpqjj51ly88ha2zqsdz564v069rkkdxw94"))))
 
     (build-system cmake-build-system)
     (arguments