diff --git a/pkgs/applications/editors/jetbrains/default.nix b/pkgs/applications/editors/jetbrains/default.nix
index b962ab6e22b..e829150d780 100644
--- a/pkgs/applications/editors/jetbrains/default.nix
+++ b/pkgs/applications/editors/jetbrains/default.nix
@@ -307,11 +307,12 @@ in
 
   mps = buildMps rec {
     name = "mps-${version}";
-    version = "2021.1"; /* updated by script */
+    version = "2021.1";
+    versionMajorMinor = "2021.1";
     description = "Create your own domain-specific language";
     license = lib.licenses.asl20;
     src = fetchurl {
-      url = "https://download.jetbrains.com/mps/${version}/MPS-${version}.tar.gz";
+      url = "https://download.jetbrains.com/mps/${versionMajorMinor}/MPS-${version}.tar.gz";
       sha256 = "0fdh8lzsi2zryi0xs961vrf3l8kqk5imlj56dhifywi7xkhs3vwn"; /* updated by script */
     };
     wmClass = "jetbrains-mps";
diff --git a/pkgs/applications/editors/jetbrains/update.pl b/pkgs/applications/editors/jetbrains/update.pl
index cd3d2193a28..ac738b6ec14 100755
--- a/pkgs/applications/editors/jetbrains/update.pl
+++ b/pkgs/applications/editors/jetbrains/update.pl
@@ -56,17 +56,20 @@ sub update_nix_block {
       if ($version eq $latest_versions{$channel}) {
         print("$channel is up to date at $version\n");
       } else {
-        print("updating $channel: $version -> $latest_versions{$channel}\n");
+        my $version_string = $latest_versions{$channel};
+        my $versionMajorMinor = $version_string =~ s/^([0-9]+[.][0-9]+).*/$1/r;
+
+        print("updating $channel: $version -> $version_string\n");
         my ($url) = $block =~ /url\s*=\s*"([^"]+)"/;
         # try to interpret some nix
         my ($name) = $block =~ /name\s*=\s*"([^"]+)"/;
-        $name =~ s/\$\{version\}/$latest_versions{$channel}/;
-        # Some url paattern contain variables more than once
+        $name =~ s/\$\{version\}/$version_string/;
+        # Some url pattern contain variables more than once
         $url =~ s/\$\{name\}/$name/g;
-        $url =~ s/\$\{version\}/$latest_versions{$channel}/g;
+        $url =~ s/\$\{version\}/$version_string/g;
+        $url =~ s/\$\{versionMajorMinor\}/$versionMajorMinor/g;
         die "$url still has some interpolation" if $url =~ /\$/;
         my ($sha256) = get("$url.sha256") =~ /^([0-9a-f]{64})/;
-        my $version_string = $latest_versions{$channel};
         unless ( $sha256 ) {
           my $full_version = $latest_versions{"full1_" . $channel};
           $url =~ s/$version_string/$full_version/;
@@ -79,6 +82,7 @@ sub update_nix_block {
         print "Jetbrains published SHA256: $sha256\n";
         print "Conversion into base32 yields: $sha256Base32\n";
         $block =~ s#version\s*=\s*"([^"]+)".+$#version = "$version_string"; /* updated by script */#m;
+        $block =~ s#versionMajorMinor\s*=\s*"([^"]+)".+$#versionMajorMinor = "$versionMajorMinor"; /* updated by script */#m;
         $block =~ s#sha256\s*=\s*"([^"]+)".+$#sha256 = "$sha256Base32"; /* updated by script */#m;
       }
     } else {