diff --git a/decoder_test.go b/decoder_test.go
index 25e87fb..10fb6df 100644
--- a/decoder_test.go
+++ b/decoder_test.go
@@ -51,6 +51,9 @@ func TestDecode_interface(t *testing.T) {
 				"a": 1e-10,
 				"b": 1e+10,
 				"c": 1e10,
+				"d": 1.2e-10,
+				"e": 1.2e+10,
+				"f": 1.2e10,
 			},
 		},
 		{
@@ -60,6 +63,9 @@ func TestDecode_interface(t *testing.T) {
 				"a": 1e-10,
 				"b": 1e+10,
 				"c": 1e10,
+				"d": 1.2e-10,
+				"e": 1.2e+10,
+				"f": 1.2e10,
 			},
 		},
 		{
diff --git a/hcl/parse.y b/hcl/parse.y
index 5b20326..8c7a047 100644
--- a/hcl/parse.y
+++ b/hcl/parse.y
@@ -193,6 +193,19 @@ number:
 			panic(err)
 		}
 
+		$$ = &Object{
+			Type:  ValueTypeFloat,
+			Value: f,
+		}
+    }
+|   int frac exp
+    {
+		fs := fmt.Sprintf("%d.%s%s", $1, $2, $3)
+		f, err := strconv.ParseFloat(fs, 64)
+		if err != nil {
+			panic(err)
+		}
+
 		$$ = &Object{
 			Type:  ValueTypeFloat,
 			Value: f,
diff --git a/hcl/y.go b/hcl/y.go
index fd2b31b..3d8b58c 100644
--- a/hcl/y.go
+++ b/hcl/y.go
@@ -58,7 +58,7 @@ const hclEofCode = 1
 const hclErrCode = 2
 const hclMaxDepth = 200
 
-//line parse.y:228
+//line parse.y:241
 
 //line yacctab:1
 var hclExca = []int{
@@ -67,63 +67,65 @@ var hclExca = []int{
 	-2, 0,
 }
 
-const hclNprod = 30
+const hclNprod = 31
 const hclPrivate = 57344
 
 var hclTokenNames []string
 var hclStates []string
 
-const hclLast = 56
+const hclLast = 60
 
 var hclAct = []int{
 
-	32, 3, 19, 41, 8, 27, 28, 29, 15, 22,
-	10, 33, 40, 22, 16, 21, 12, 22, 20, 21,
-	17, 14, 34, 21, 35, 8, 4, 31, 4, 7,
-	13, 7, 36, 7, 24, 12, 2, 4, 22, 9,
-	7, 5, 42, 34, 21, 39, 38, 37, 11, 23,
-	1, 25, 26, 6, 30, 18,
+	32, 26, 3, 19, 42, 8, 27, 28, 29, 28,
+	29, 15, 22, 41, 22, 5, 9, 16, 21, 12,
+	21, 20, 11, 22, 40, 35, 8, 37, 34, 21,
+	1, 4, 4, 31, 7, 7, 13, 36, 24, 7,
+	22, 12, 2, 43, 4, 34, 21, 7, 10, 33,
+	39, 38, 25, 6, 30, 23, 18, 0, 17, 14,
 }
 var hclPact = []int{
 
-	30, -1000, 30, -1000, 31, -1000, 23, -1000, -1000, 4,
-	-1000, -1000, 21, -1000, -1000, -1000, -1000, -1000, -1000, -11,
-	12, 8, -1000, 19, -1000, -1000, -1000, 42, 41, 40,
-	-3, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, 33, -1000,
+	37, -1000, 37, -1000, 8, -1000, 29, -1000, -1000, 7,
+	-1000, -1000, 25, -1000, -1000, -1000, -1000, -1000, -1000, -10,
+	18, 9, -1000, 24, -1000, -8, -1000, 46, 45, 19,
+	-2, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, 35, -1000,
 }
 var hclPgo = []int{
 
-	0, 2, 55, 54, 36, 41, 11, 10, 1, 0,
-	53, 52, 51, 50,
+	0, 3, 56, 54, 42, 15, 49, 48, 2, 0,
+	53, 1, 52, 30,
 }
 var hclR1 = []int{
 
 	0, 13, 4, 4, 7, 7, 8, 8, 8, 8,
 	8, 8, 5, 5, 10, 10, 2, 2, 3, 3,
-	9, 9, 6, 6, 6, 1, 1, 11, 11, 12,
+	9, 9, 6, 6, 6, 6, 1, 1, 11, 11,
+	12,
 }
 var hclR2 = []int{
 
 	0, 1, 1, 2, 3, 2, 3, 3, 3, 3,
 	3, 1, 2, 2, 1, 1, 3, 2, 1, 3,
-	1, 1, 1, 2, 2, 2, 1, 2, 2, 2,
+	1, 1, 1, 2, 2, 3, 2, 1, 2, 2,
+	2,
 }
 var hclChk = []int{
 
 	-1000, -13, -4, -8, 7, -5, -10, 10, -8, 8,
 	-7, -5, 12, 7, -6, 4, 10, -7, -2, -1,
 	14, 11, 5, -4, 13, -12, -11, 16, 17, 18,
-	-3, 15, -9, -6, 10, -1, 13, 5, 5, 5,
-	15, 6, -9,
+	-3, 15, -9, -6, 10, -1, 13, -11, 5, 5,
+	5, 15, 6, -9,
 }
 var hclDef = []int{
 
 	0, -2, 1, 2, 14, 11, 0, 15, 3, 0,
 	12, 13, 0, 14, 6, 7, 8, 9, 10, 22,
-	0, 0, 26, 0, 5, 23, 24, 0, 0, 0,
-	0, 17, 18, 20, 21, 25, 4, 29, 27, 28,
-	16, 0, 19,
+	0, 0, 27, 0, 5, 23, 24, 0, 0, 0,
+	0, 17, 18, 20, 21, 26, 4, 25, 30, 28,
+	29, 16, 0, 19,
 }
 var hclTok1 = []int{
 
@@ -535,27 +537,41 @@ hcldefault:
 			}
 		}
 	case 25:
-		//line parse.y:204
+		//line parse.y:202
+		{
+			fs := fmt.Sprintf("%d.%s%s", hclS[hclpt-2].num, hclS[hclpt-1].str, hclS[hclpt-0].str)
+			f, err := strconv.ParseFloat(fs, 64)
+			if err != nil {
+				panic(err)
+			}
+
+			hclVAL.obj = &Object{
+				Type:  ValueTypeFloat,
+				Value: f,
+			}
+		}
+	case 26:
+		//line parse.y:217
 		{
 			hclVAL.num = hclS[hclpt-0].num * -1
 		}
-	case 26:
-		//line parse.y:208
+	case 27:
+		//line parse.y:221
 		{
 			hclVAL.num = hclS[hclpt-0].num
 		}
-	case 27:
-		//line parse.y:214
+	case 28:
+		//line parse.y:227
 		{
 			hclVAL.str = "e" + strconv.FormatInt(int64(hclS[hclpt-0].num), 10)
 		}
-	case 28:
-		//line parse.y:218
+	case 29:
+		//line parse.y:231
 		{
 			hclVAL.str = "e-" + strconv.FormatInt(int64(hclS[hclpt-0].num), 10)
 		}
-	case 29:
-		//line parse.y:224
+	case 30:
+		//line parse.y:237
 		{
 			hclVAL.str = strconv.FormatInt(int64(hclS[hclpt-0].num), 10)
 		}
diff --git a/json/parse.y b/json/parse.y
index dc8af85..436938e 100644
--- a/json/parse.y
+++ b/json/parse.y
@@ -161,6 +161,19 @@ number:
 			panic(err)
 		}
 
+		$$ = &hcl.Object{
+			Type:  hcl.ValueTypeFloat,
+			Value: f,
+		}
+    }
+|   int frac exp
+    {
+		fs := fmt.Sprintf("%d.%s%s", $1, $2, $3)
+		f, err := strconv.ParseFloat(fs, 64)
+		if err != nil {
+			panic(err)
+		}
+
 		$$ = &hcl.Object{
 			Type:  hcl.ValueTypeFloat,
 			Value: f,
diff --git a/json/y.go b/json/y.go
index 11d4671..cd062d7 100644
--- a/json/y.go
+++ b/json/y.go
@@ -65,7 +65,7 @@ const jsonEofCode = 1
 const jsonErrCode = 2
 const jsonMaxDepth = 200
 
-//line parse.y:196
+//line parse.y:209
 
 //line yacctab:1
 var jsonExca = []int{
@@ -74,59 +74,60 @@ var jsonExca = []int{
 	-2, 0,
 }
 
-const jsonNprod = 26
+const jsonNprod = 27
 const jsonPrivate = 57344
 
 var jsonTokenNames []string
 var jsonStates []string
 
-const jsonLast = 50
+const jsonLast = 53
 
 var jsonAct = []int{
 
-	12, 23, 26, 27, 28, 23, 3, 13, 3, 20,
-	21, 29, 17, 18, 19, 22, 7, 23, 5, 22,
-	7, 9, 31, 13, 3, 37, 21, 8, 17, 18,
-	19, 22, 32, 36, 6, 10, 35, 34, 38, 33,
-	15, 2, 1, 24, 11, 25, 4, 30, 16, 14,
+	12, 23, 25, 26, 27, 28, 23, 13, 3, 20,
+	21, 29, 17, 18, 19, 22, 3, 23, 27, 28,
+	22, 7, 31, 13, 3, 38, 21, 33, 17, 18,
+	19, 22, 32, 37, 9, 7, 6, 5, 10, 39,
+	8, 36, 35, 34, 15, 2, 11, 1, 24, 4,
+	30, 16, 14,
 }
 var jsonPact = []int{
 
-	-5, -1000, -1000, 6, 15, -1000, -1000, 30, -1000, 10,
+	5, -1000, -1000, 25, 28, -1000, -1000, 33, -1000, 11,
 	13, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
-	-17, -3, 1, -1000, -1000, -1000, 35, 33, 32, -1000,
-	19, -1000, -1000, -1000, -1000, -1000, -1000, 13, -1000,
+	-16, -3, 2, -1000, -2, -1000, 39, 38, 37, -1000,
+	19, -1000, -1000, -1000, -1000, -1000, -1000, -1000, 13, -1000,
 }
 var jsonPgo = []int{
 
-	0, 9, 49, 40, 34, 0, 48, 47, 46, 45,
-	43, 42,
+	0, 9, 52, 44, 36, 0, 51, 50, 49, 2,
+	48, 47,
 }
 var jsonR1 = []int{
 
 	0, 11, 3, 3, 8, 8, 4, 5, 5, 5,
 	5, 5, 5, 5, 6, 6, 7, 7, 2, 2,
-	2, 1, 1, 9, 9, 10,
+	2, 2, 1, 1, 9, 9, 10,
 }
 var jsonR2 = []int{
 
 	0, 1, 3, 2, 1, 3, 3, 1, 1, 1,
 	1, 1, 1, 1, 2, 3, 1, 3, 1, 2,
-	2, 2, 1, 2, 2, 2,
+	2, 3, 2, 1, 2, 2, 2,
 }
 var jsonChk = []int{
 
 	-1000, -11, -3, 11, -8, 12, -4, 10, 12, 6,
 	5, -4, -5, 10, -2, -3, -6, 15, 16, 17,
 	-1, 13, 18, 4, -10, -9, 19, 20, 21, 14,
-	-7, -5, -1, 4, 4, 4, 14, 6, -5,
+	-7, -5, -1, -9, 4, 4, 4, 14, 6, -5,
 }
 var jsonDef = []int{
 
 	0, -2, 1, 0, 0, 3, 4, 0, 2, 0,
 	0, 5, 6, 7, 8, 9, 10, 11, 12, 13,
-	18, 0, 0, 22, 19, 20, 0, 0, 0, 14,
-	0, 16, 21, 25, 23, 24, 15, 0, 17,
+	18, 0, 0, 23, 19, 20, 0, 0, 0, 14,
+	0, 16, 22, 21, 26, 24, 25, 15, 0, 17,
 }
 var jsonTok1 = []int{
 
@@ -507,27 +508,41 @@ jsondefault:
 			}
 		}
 	case 21:
-		//line parse.y:172
+		//line parse.y:170
+		{
+			fs := fmt.Sprintf("%d.%s%s", jsonS[jsonpt-2].num, jsonS[jsonpt-1].str, jsonS[jsonpt-0].str)
+			f, err := strconv.ParseFloat(fs, 64)
+			if err != nil {
+				panic(err)
+			}
+
+			jsonVAL.obj = &hcl.Object{
+				Type:  hcl.ValueTypeFloat,
+				Value: f,
+			}
+		}
+	case 22:
+		//line parse.y:185
 		{
 			jsonVAL.num = jsonS[jsonpt-0].num * -1
 		}
-	case 22:
-		//line parse.y:176
+	case 23:
+		//line parse.y:189
 		{
 			jsonVAL.num = jsonS[jsonpt-0].num
 		}
-	case 23:
-		//line parse.y:182
+	case 24:
+		//line parse.y:195
 		{
 			jsonVAL.str = "e" + strconv.FormatInt(int64(jsonS[jsonpt-0].num), 10)
 		}
-	case 24:
-		//line parse.y:186
+	case 25:
+		//line parse.y:199
 		{
 			jsonVAL.str = "e-" + strconv.FormatInt(int64(jsonS[jsonpt-0].num), 10)
 		}
-	case 25:
-		//line parse.y:192
+	case 26:
+		//line parse.y:205
 		{
 			jsonVAL.str = strconv.FormatInt(int64(jsonS[jsonpt-0].num), 10)
 		}
diff --git a/test-fixtures/scientific.hcl b/test-fixtures/scientific.hcl
index 156ed0f..b9eca28 100644
--- a/test-fixtures/scientific.hcl
+++ b/test-fixtures/scientific.hcl
@@ -1,3 +1,6 @@
 a = 1e-10
 b = 1e+10
 c = 1e10
+d = 1.2e-10
+e = 1.2e+10
+f = 1.2e10
diff --git a/test-fixtures/scientific.json b/test-fixtures/scientific.json
index eb29895..c1fce3c 100644
--- a/test-fixtures/scientific.json
+++ b/test-fixtures/scientific.json
@@ -1,5 +1,8 @@
 {
     "a": 1e-10,
     "b": 1e+10,
-    "c": 1e10
+    "c": 1e10,
+    "d": 1.2e-10,
+    "e": 1.2e+10,
+    "f": 1.2e10
 }