diff --git a/package-lock.json b/package-lock.json
index 0e0c391..5c4646e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,7 +5,7 @@
   "requires": true,
   "packages": {
     "": {
-      "version": "1.6.0-dev.2",
+      "version": "1.8.0-dev.1",
       "license": "MIT",
       "dependencies": {
         "@ctrl/tinycolor": "^3.3.3",
@@ -23,7 +23,7 @@
         "parse-duration": "^0.4.4",
         "spark-md5": "^3.0.1",
         "tinycolor": "^0.0.1",
-        "ts-interface-checker": "^0.1.13"
+        "ts-interface-checker": "^0.2.0"
       },
       "devDependencies": {
         "@babel/core": "^7.12.10",
@@ -8015,7 +8015,7 @@
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/lodash._baseindexof/-/lodash._baseindexof-3.1.0.tgz",
       "integrity": "sha1-/lK1OhxnYeQmGNZU5KJXie1hgiw=",
-      "dev": true,
+      "extraneous": true,
       "inBundle": true,
       "license": "MIT"
     },
@@ -8035,7 +8035,7 @@
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/lodash._bindcallback/-/lodash._bindcallback-3.0.1.tgz",
       "integrity": "sha1-5THCdkTPi1epnhftlbNcdIeJOS4=",
-      "dev": true,
+      "extraneous": true,
       "inBundle": true,
       "license": "MIT"
     },
@@ -8043,7 +8043,7 @@
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/lodash._cacheindexof/-/lodash._cacheindexof-3.0.2.tgz",
       "integrity": "sha1-PcaayCSY0u5ePOVgkbr9Ktx73pI=",
-      "dev": true,
+      "extraneous": true,
       "inBundle": true,
       "license": "MIT"
     },
@@ -8051,7 +8051,7 @@
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/lodash._createcache/-/lodash._createcache-3.1.2.tgz",
       "integrity": "sha1-VtagZAF2JeeevKa4AY4XRAvc8JM=",
-      "dev": true,
+      "extraneous": true,
       "inBundle": true,
       "license": "MIT",
       "dependencies": {
@@ -8070,7 +8070,7 @@
       "version": "3.9.1",
       "resolved": "https://registry.npmjs.org/lodash._getnative/-/lodash._getnative-3.9.1.tgz",
       "integrity": "sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U=",
-      "dev": true,
+      "extraneous": true,
       "inBundle": true,
       "license": "MIT"
     },
@@ -8094,7 +8094,7 @@
       "version": "3.6.1",
       "resolved": "https://registry.npmjs.org/lodash.restparam/-/lodash.restparam-3.6.1.tgz",
       "integrity": "sha1-k2pOMJ7zMKdkXtQUWYbIWuWyCAU=",
-      "dev": true,
+      "extraneous": true,
       "inBundle": true,
       "license": "MIT"
     },
@@ -12350,9 +12350,9 @@
       }
     },
     "node_modules/ts-interface-checker": {
-      "version": "0.1.13",
-      "resolved": "https://registry.npmjs.org/ts-interface-checker/-/ts-interface-checker-0.1.13.tgz",
-      "integrity": "sha512-Y/arvbn+rrz3JCKl9C4kVNfTfSm2/mEp5FSz5EsZSANGPSlQrpRI5M4PKF+mJnE52jOO90PnPSc3Ur3bTQw0gA=="
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/ts-interface-checker/-/ts-interface-checker-0.2.0.tgz",
+      "integrity": "sha512-wkqy1TC9FxALfAl10ov0joZK5aXjIhnOYBe26XSPiRD0UemFuQOF7D/LowiCFu5gbjYJc+ao0H+I50YYU9oKVA=="
     },
     "node_modules/tslib": {
       "version": "2.1.0",
@@ -18757,7 +18757,7 @@
           "resolved": "https://registry.npmjs.org/lodash._baseindexof/-/lodash._baseindexof-3.1.0.tgz",
           "integrity": "sha1-/lK1OhxnYeQmGNZU5KJXie1hgiw=",
           "bundled": true,
-          "dev": true
+          "extraneous": true
         },
         "lodash._baseuniq": {
           "version": "4.6.0",
@@ -18775,21 +18775,21 @@
           "resolved": "https://registry.npmjs.org/lodash._bindcallback/-/lodash._bindcallback-3.0.1.tgz",
           "integrity": "sha1-5THCdkTPi1epnhftlbNcdIeJOS4=",
           "bundled": true,
-          "dev": true
+          "extraneous": true
         },
         "lodash._cacheindexof": {
           "version": "3.0.2",
           "resolved": "https://registry.npmjs.org/lodash._cacheindexof/-/lodash._cacheindexof-3.0.2.tgz",
           "integrity": "sha1-PcaayCSY0u5ePOVgkbr9Ktx73pI=",
           "bundled": true,
-          "dev": true
+          "extraneous": true
         },
         "lodash._createcache": {
           "version": "3.1.2",
           "resolved": "https://registry.npmjs.org/lodash._createcache/-/lodash._createcache-3.1.2.tgz",
           "integrity": "sha1-VtagZAF2JeeevKa4AY4XRAvc8JM=",
           "bundled": true,
-          "dev": true,
+          "extraneous": true,
           "requires": {
             "lodash._getnative": "^3.0.0"
           }
@@ -18806,7 +18806,7 @@
           "resolved": "https://registry.npmjs.org/lodash._getnative/-/lodash._getnative-3.9.1.tgz",
           "integrity": "sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U=",
           "bundled": true,
-          "dev": true
+          "extraneous": true
         },
         "lodash._root": {
           "version": "3.0.1",
@@ -18827,7 +18827,7 @@
           "resolved": "https://registry.npmjs.org/lodash.restparam/-/lodash.restparam-3.6.1.tgz",
           "integrity": "sha1-k2pOMJ7zMKdkXtQUWYbIWuWyCAU=",
           "bundled": true,
-          "dev": true
+          "extraneous": true
         },
         "lodash.union": {
           "version": "4.6.0",
@@ -22225,9 +22225,9 @@
       }
     },
     "ts-interface-checker": {
-      "version": "0.1.13",
-      "resolved": "https://registry.npmjs.org/ts-interface-checker/-/ts-interface-checker-0.1.13.tgz",
-      "integrity": "sha512-Y/arvbn+rrz3JCKl9C4kVNfTfSm2/mEp5FSz5EsZSANGPSlQrpRI5M4PKF+mJnE52jOO90PnPSc3Ur3bTQw0gA=="
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/ts-interface-checker/-/ts-interface-checker-0.2.0.tgz",
+      "integrity": "sha512-wkqy1TC9FxALfAl10ov0joZK5aXjIhnOYBe26XSPiRD0UemFuQOF7D/LowiCFu5gbjYJc+ao0H+I50YYU9oKVA=="
     },
     "tslib": {
       "version": "2.1.0",
diff --git a/package.json b/package.json
index 0893d56..066d8f5 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "parse-duration": "^0.4.4",
     "spark-md5": "^3.0.1",
     "tinycolor": "^0.0.1",
-    "ts-interface-checker": "^0.1.13"
+    "ts-interface-checker": "^0.2.0"
   },
   "devDependencies": {
     "@babel/core": "^7.12.10",
diff --git a/src/types-config-ti.ts b/src/types-config-ti.ts
index 417b3b0..2273108 100644
--- a/src/types-config-ti.ts
+++ b/src/types-config-ti.ts
@@ -45,6 +45,7 @@ export const ChartCardSpanExtConfig = t.iface([], {
 });
 
 export const ChartCardAllSeriesExternalConfig = t.iface([], {
+  "entity": t.opt("string"),
   "attribute": t.opt("string"),
   "name": t.opt("string"),
   "type": t.opt(t.union(t.lit('line'), t.lit('column'), t.lit('area'))),
@@ -80,41 +81,8 @@ export const ChartCardAllSeriesExternalConfig = t.iface([], {
   "color_threshold": t.opt(t.array("ChartCardColorThreshold")),
 });
 
-export const ChartCardSeriesExternalConfig = t.iface([], {
+export const ChartCardSeriesExternalConfig = t.iface(["ChartCardAllSeriesExternalConfig"], {
   "entity": "string",
-  "attribute": t.opt("string"),
-  "name": t.opt("string"),
-  "type": t.opt(t.union(t.lit('line'), t.lit('column'), t.lit('area'))),
-  "color": t.opt("string"),
-  "opacity": t.opt("number"),
-  "curve": t.opt(t.union(t.lit('smooth'), t.lit('straight'), t.lit('stepline'))),
-  "stroke_width": t.opt("number"),
-  "extend_to_end": t.opt("boolean"),
-  "unit": t.opt("string"),
-  "invert": t.opt("boolean"),
-  "data_generator": t.opt("string"),
-  "float_precision": t.opt("number"),
-  "min": t.opt("number"),
-  "max": t.opt("number"),
-  "offset": t.opt("string"),
-  "fill_raw": t.opt("GroupByFill"),
-  "show": t.opt(t.iface([], {
-    "as_duration": t.opt("ChartCardPrettyTime"),
-    "legend_value": t.opt("boolean"),
-    "in_header": t.opt(t.union("boolean", t.lit('raw'))),
-    "header_color_threshold": t.opt("boolean"),
-    "in_chart": t.opt("boolean"),
-    "datalabels": t.opt(t.union("boolean", t.lit('total'))),
-    "hidden_by_default": t.opt("boolean"),
-    "extremas": t.opt(t.union("boolean", t.lit('time'))),
-  })),
-  "group_by": t.opt(t.iface([], {
-    "duration": t.opt("string"),
-    "func": t.opt("GroupByFunc"),
-    "fill": t.opt("GroupByFill"),
-  })),
-  "transform": t.opt("string"),
-  "color_threshold": t.opt(t.array("ChartCardColorThreshold")),
 });
 
 export const ChartCardPrettyTime = t.union(t.lit('millisecond'), t.lit('second'), t.lit('minute'), t.lit('hour'), t.lit('day'), t.lit('week'), t.lit('month'), t.lit('year'));
diff --git a/src/types-config.ts b/src/types-config.ts
index 8b0dda2..5904129 100644
--- a/src/types-config.ts
+++ b/src/types-config.ts
@@ -42,6 +42,7 @@ export interface ChartCardSpanExtConfig {
 }
 
 export interface ChartCardAllSeriesExternalConfig {
+  entity?: string;
   attribute?: string;
   name?: string;
   type?: 'line' | 'column' | 'area';
@@ -77,45 +78,8 @@ export interface ChartCardAllSeriesExternalConfig {
   color_threshold?: ChartCardColorThreshold[];
 }
 
-// Need to duplicate because of https://github.com/gristlabs/ts-interface-checker/issues/35
-// export interface ChartCardSeriesExternalConfig extends ChartCardAllSeriesExternalConfig {
-//   entity: string;
-// }
-export interface ChartCardSeriesExternalConfig {
+export interface ChartCardSeriesExternalConfig extends ChartCardAllSeriesExternalConfig {
   entity: string;
-  attribute?: string;
-  name?: string;
-  type?: 'line' | 'column' | 'area';
-  color?: string;
-  opacity?: number;
-  curve?: 'smooth' | 'straight' | 'stepline';
-  stroke_width?: number;
-  extend_to_end?: boolean;
-  unit?: string;
-  invert?: boolean;
-  data_generator?: string;
-  float_precision?: number;
-  min?: number;
-  max?: number;
-  offset?: string;
-  fill_raw?: GroupByFill;
-  show?: {
-    as_duration?: ChartCardPrettyTime;
-    legend_value?: boolean;
-    in_header?: boolean | 'raw';
-    header_color_threshold?: boolean;
-    in_chart?: boolean;
-    datalabels?: boolean | 'total';
-    hidden_by_default?: boolean;
-    extremas?: boolean | 'time';
-  };
-  group_by?: {
-    duration?: string;
-    func?: GroupByFunc;
-    fill?: GroupByFill;
-  };
-  transform?: string;
-  color_threshold?: ChartCardColorThreshold[];
 }
 
 export type ChartCardPrettyTime = 'millisecond' | 'second' | 'minute' | 'hour' | 'day' | 'week' | 'month' | 'year';