diff --git a/test/translate.ts b/test/translate.ts
index ecd15231..5e8934f4 100644
--- a/test/translate.ts
+++ b/test/translate.ts
@@ -18,6 +18,12 @@ tape('Version string to Semver translator', function (t) {
     st.equal(versionToSemver('0.4.20-nightly.2018.2.13+commit.27ef9794.Emscripten.clang'), '0.4.20-nightly.2018.2.13+commit.27ef9794.Emscripten.clang');
     st.end();
   });
+  t.test('Broken nightly with leading zeroes', function (st) {
+    st.equal(versionToSemver('0.3.6-nightly.2016.08.27+commit.91d4fa47.Emscripten.clang'), '0.3.6-nightly.2016.8.27+commit.91d4fa47.Emscripten.clang');
+    st.equal(versionToSemver('0.4.1-nightly.2016.09.09+commit.79867f49.Emscripten.clang'), '0.4.1-nightly.2016.9.9+commit.79867f49.Emscripten.clang');
+    st.equal(versionToSemver('0.4.1-nightly.2016.12.06+commit.79867f49.Emscripten.clang'), '0.4.1-nightly.2016.12.6+commit.79867f49.Emscripten.clang');
+    st.end();
+  });
   t.test('Old style 0.1.1', function (st) {
     st.equal(versionToSemver('0.1.1-6ff4cd6b/RelWithDebInfo-Emscripten/clang/int'), '0.1.1+commit.6ff4cd6b');
     st.end();
@@ -37,6 +43,10 @@ tape('Version string to Semver translator', function (t) {
     );
     st.end();
   });
+  t.test('Broken 0.3.4 nightly', function (st) {
+    st.equal(versionToSemver('0.3.4-0/Release-Emscripten/clang/Interpreter'), '0.3.4-nightly');
+    st.end();
+  });
   t.test('Old style 0.3.5', function (st) {
     // The one in the solc-bin list
     st.equal(versionToSemver('0.3.5-371690f0/Release-Emscripten/clang/Interpreter'), '0.3.5+commit.371690f0');
diff --git a/translate.ts b/translate.ts
index ca0c39f7..551817f2 100644
--- a/translate.ts
+++ b/translate.ts
@@ -1,15 +1,20 @@
 import linker from './linker';
 
 /// Translate old style version numbers to semver.
-/// Old style: 0.3.6-3fc68da5/Release-Emscripten/clang
+/// Old style: 0.4.1-nightly.2016.09.09+commit.79867f49.Emscripten.clang
+///            0.3.6-nightly.2016.08.27+commit.91d4fa47.Emscripten.clang
+///            0.3.6-3fc68da5/Release-Emscripten/clang
 ///            0.3.5-371690f0/Release-Emscripten/clang/Interpreter
 ///            0.3.5-0/Release-Emscripten/clang/Interpreter
+///            0.3.4-0/Release-Emscripten/clang/Interpreter
 ///            0.2.0-e7098958/.-Emscripten/clang/int linked to libethereum-1.1.1-bbb80ab0/.-Emscripten/clang/int
 ///            0.1.3-0/.-/clang/int linked to libethereum-0.9.92-0/.-/clang/int
 ///            0.1.2-5c3bfd4b*/.-/clang/int
 ///            0.1.1-6ff4cd6b/RelWithDebInfo-Emscripten/clang/int
-/// New style: 0.4.5+commit.b318366e.Emscripten.clang
+/// New style: 0.8.1-nightly.2021.1.7+commit.d11cf15d.js
+///            0.4.5+commit.b318366e.Emscripten.clang
 function versionToSemver (version) {
+  // This parses the old style with a commit hash. It ignores the details past the commit hash.
   // FIXME: parse more detail, but this is a good start
   const parsed = version.match(/^([0-9]+\.[0-9]+\.[0-9]+)-([0-9a-f]{8})[/*].*$/);
   if (parsed) {
@@ -18,9 +23,18 @@ function versionToSemver (version) {
   if (version.indexOf('0.1.3-0') !== -1) {
     return '0.1.3';
   }
+  if (version.indexOf('0.3.4-0') !== -1) {
+    return '0.3.4-nightly';
+  }
   if (version.indexOf('0.3.5-0') !== -1) {
     return '0.3.5';
   }
+  // This parses the obsolete nightly style where the date can have leading zeroes.
+  // It does not validate the dates, but only if the date format is correct (i.e. YYYY.[M]M.[D]D).
+  const nightlyParsed = version.match(/^([0-9]+\.[0-9]+\.[0-9]+)-nightly\.([0-9]+)\.0?([1-9]+)\.0?([1-9]+)(.*)$/);
+  if (nightlyParsed) {
+    return nightlyParsed[1] + '-nightly.' + nightlyParsed[2] + '.' + nightlyParsed[3] + '.' + nightlyParsed[4] + nightlyParsed[5];
+  }
   // assume it is already semver compatible
   return version;
 }