diff --git a/OTFbuild/sheet_config.py b/OTFbuild/sheet_config.py
index 2c40867..f56d0bb 100644
--- a/OTFbuild/sheet_config.py
+++ b/OTFbuild/sheet_config.py
@@ -80,6 +80,7 @@ SHEET_LATIN_EXTF_VARW = 46
 SHEET_LATIN_EXTG_VARW = 47
 SHEET_OGHAM_VARW = 48
 SHEET_COPTIC_VARW = 49
+SHEET_CYRILIC_EXTD_VARW = 50
 
 SHEET_UNKNOWN = 254
 
@@ -134,6 +135,7 @@ FILE_LIST = [
     "latinExtG_variable.tga",
     "ogham_variable.tga",
     "coptic_variable.tga",
+    "cyrilic_extD_variable.tga",
 ]
 
 CODE_RANGE = [
@@ -187,6 +189,7 @@ CODE_RANGE = [
     list(range(0x1DF00, 0x1E000)),                                                  # 47: Latin Ext G
     list(range(0x1680, 0x16A0)),                                                    # 48: Ogham
     list(range(0x2C80, 0x2D00)),                                                    # 49: Coptic
+    list(range(0x1E030, 0x1E090)),                                                  # 50: Cyrillic Ext D
 ]
 
 CODE_RANGE_HANGUL_COMPAT = range(0x3130, 0x3190)
@@ -571,5 +574,6 @@ def index_y(sheet_index, c):
         SHEET_LATIN_EXTG_VARW: lambda: (c - 0x1DF00) // 16,
         SHEET_OGHAM_VARW: lambda: (c - 0x1680) // 16,
         SHEET_COPTIC_VARW: lambda: (c - 0x2C80) // 16,
+        SHEET_CYRILIC_EXTD_VARW: lambda: (c - 0x1E030) // 16,
         SHEET_HANGUL: lambda: 0,
     }.get(sheet_index, lambda: c // 16)()
diff --git a/demo.PNG b/demo.PNG
index 36277fa..cb38ddf 100644
Binary files a/demo.PNG and b/demo.PNG differ
diff --git a/demotext_unaligned.txt b/demotext_unaligned.txt
index c484a26..e91f44c 100755
--- a/demotext_unaligned.txt
+++ b/demotext_unaligned.txt
@@ -130,7 +130,7 @@ How multilingual? Real multilingual!
 ⁃ Currency Symbols
 ⁃ Cyrillic
 ⁃ Cyrillic Supplement
-⁃ Cyrillic Extended-A/B/C
+⁃ Cyrillic Extended-A/B/C/D
 ⁃ Devanagari
 ⁃ Enclosed Alphanumeric Supplement
 ⁃ General Punctuations
diff --git a/src/assets/cyrilic_extD_variable.tga b/src/assets/cyrilic_extD_variable.tga
new file mode 100644
index 0000000..a00f918
--- /dev/null
+++ b/src/assets/cyrilic_extD_variable.tga
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:852b46922b8813212238e9cb3b21ce751f6e7e0171f35a665e30333142b217c0
+size 122898
diff --git a/src/net/torvald/terrarumsansbitmap/gdx/TerrarumSansBitmap.kt b/src/net/torvald/terrarumsansbitmap/gdx/TerrarumSansBitmap.kt
index 8ed8421..a80d239 100755
--- a/src/net/torvald/terrarumsansbitmap/gdx/TerrarumSansBitmap.kt
+++ b/src/net/torvald/terrarumsansbitmap/gdx/TerrarumSansBitmap.kt
@@ -883,6 +883,7 @@ class TerrarumSansBitmap(
             SHEET_LATIN_EXTG_VARW -> latinExtGIndexY(ch)
             SHEET_OGHAM_VARW -> oghamIndexY(ch)
             SHEET_COPTIC_VARW -> copticIndexY(ch)
+            SHEET_CYRILIC_EXTD_VARW -> cyrilicExtDIndexY(ch)
             else -> ch / 16
         }
 
@@ -2616,6 +2617,7 @@ class TerrarumSansBitmap(
         internal const val SHEET_LATIN_EXTG_VARW = 47
         internal const val SHEET_OGHAM_VARW = 48
         internal const val SHEET_COPTIC_VARW = 49
+        internal const val SHEET_CYRILIC_EXTD_VARW = 50
 
         internal const val SHEET_UNKNOWN = 254
 
@@ -2688,6 +2690,7 @@ class TerrarumSansBitmap(
             "latinExtG_variable.tga",
             "ogham_variable.tga",
             "coptic_variable.tga",
+            "cyrilic_extD_variable.tga",
         )
         internal val codeRange = arrayOf( // MUST BE MATCHING WITH SHEET INDICES!!
             0..0xFF, // SHEET_ASCII_VARW
@@ -2740,6 +2743,7 @@ class TerrarumSansBitmap(
             0x1DF00..0x1DFFF, // SHEET_LATIN_EXTG_VARW
             0x1680..0x169F, // SHEET_OGHAM_VARW
             0x2C80..0x2CFF, // SHEET_COPTIC_VARW
+            0x1E030..0x1E08F, // SHEET_CYRILIC_EXTD_VARW
         )
         private val codeRangeHangulCompat = 0x3130..0x318F
 
@@ -3100,6 +3104,7 @@ class TerrarumSansBitmap(
         private fun latinExtGIndexY(c: CodePoint) = (c - 0x1DF00) / 16
         private fun oghamIndexY(c: CodePoint) = (c - 0x1680) / 16
         private fun copticIndexY(c: CodePoint) = (c - 0x2C80) / 16
+        private fun cyrilicExtDIndexY(c: CodePoint) = (c - 0x1E030) / 16
 
         val charsetOverrideDefault = Character.toChars(CHARSET_OVERRIDE_DEFAULT).toSurrogatedString()
         val charsetOverrideBulgarian = Character.toChars(CHARSET_OVERRIDE_BG_BG).toSurrogatedString()
diff --git a/work_files/cyrilic_extB_variable.kra b/work_files/cyrilic_extB_variable.kra
index 8c24b1d..450692b 100644
--- a/work_files/cyrilic_extB_variable.kra
+++ b/work_files/cyrilic_extB_variable.kra
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2887232599d756daf371144311b5a30dc3a624a77e5aeb2ad1553ea38a9ef9e3
-size 58593
+oid sha256:77e24daa1ff12d7ad2dbbbd3b6fb8f1e5f700a17a8219c49c3706936b5bae500
+size 58707
diff --git a/work_files/cyrilic_extD_variable.kra b/work_files/cyrilic_extD_variable.kra
new file mode 100644
index 0000000..930a5e2
--- /dev/null
+++ b/work_files/cyrilic_extD_variable.kra
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c7a1cc239ca8f7c5b6977d556aa6c526fd5713fa816ae3a6003e14f957994958
+size 45393
diff --git a/work_files/maths1_extrawide_variable.kra b/work_files/maths1_extrawide_variable.kra
index 90ffcce..e6581e5 100644
--- a/work_files/maths1_extrawide_variable.kra
+++ b/work_files/maths1_extrawide_variable.kra
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:91d5329cd1e5cbe72dea9d18ba998d7a22bef2c0177c4b4f01801c70e2defcd6
-size 73843
+oid sha256:7cd07e6efd7098989ae181c8b190a70ef717f0d8576a07c845050a93d8c17d72
+size 94381