diff --git a/schema/omh/speed-unit-value-1.0.json b/schema/omh/speed-unit-value-1.0.json
index 9dcf722a..d51ed71c 100644
--- a/schema/omh/speed-unit-value-1.0.json
+++ b/schema/omh/speed-unit-value-1.0.json
@@ -1,6 +1,10 @@
 {
     "$schema": "http://json-schema.org/draft-04/schema#",
-
+    "deprecation": {
+        "reason": "This schema is now deprecated, in favor of the IEEE 1752.1 schema of the same name.",
+        "supersededBy": "https://w3id.org/ieee/ieee-1752-schema/speed-unit-value.json",
+        "date": "2024-01-30"
+    },
     "description": "This schema represents a speed (distance over time).",
     "type": "object",
     "references": [
diff --git a/schema/omh/systolic-blood-pressure-1.1.json b/schema/omh/systolic-blood-pressure-1.1.json
new file mode 100644
index 00000000..ec9ec7d8
--- /dev/null
+++ b/schema/omh/systolic-blood-pressure-1.1.json
@@ -0,0 +1,31 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "$id": "https://w3id.org/openmhealth/schemas/omh/systolic-blood-pressure-1.1.json",
+    "description": "This schema represents a person's systolic blood pressure.",
+    "type": "object",
+    "references": [
+        {
+            "description": "The SNOMED code represents systolic blood pressure (observable entity)",
+            "url": "http://purl.bioontology.org/ontology/SNOMEDCT/271649006"
+        }
+    ],
+
+    "definitions": {
+        "unit_value": {
+            "$ref": "https://w3id.org/ieee/ieee-1752-schema/unit-value-1.0.json"
+        }
+    },
+
+    "allOf": [
+        {
+            "$ref": "#/definitions/unit_value"
+        },
+        {
+            "properties": {
+                "unit": {
+                    "enum": ["mmHg"]
+                }
+            }
+        }
+    ]
+}
\ No newline at end of file
diff --git a/schema/omh/systolic-blood-pressure-1.x.json b/schema/omh/systolic-blood-pressure-1.x.json
index 33e1df16..cf3a7e13 120000
--- a/schema/omh/systolic-blood-pressure-1.x.json
+++ b/schema/omh/systolic-blood-pressure-1.x.json
@@ -1 +1 @@
-systolic-blood-pressure-1.0.json
\ No newline at end of file
+systolic-blood-pressure-1.1.json
\ No newline at end of file
diff --git a/schema/omh/unit-value-1.0.json b/schema/omh/unit-value-1.0.json
index 40cae65f..6a99154f 100644
--- a/schema/omh/unit-value-1.0.json
+++ b/schema/omh/unit-value-1.0.json
@@ -1,6 +1,10 @@
 {
     "$schema": "http://json-schema.org/draft-04/schema#",
-
+    "deprecation": {
+        "reason": "This schema is now deprecated, in favor of the IEEE 1752.1 schema of the same name.",
+        "supersededBy": "https://w3id.org/ieee/ieee-1752-schema/unit-value.json",
+        "date": "2024-01-30"
+    },
     "description": "This schema represents a numerical value with a unit of measure.",
 
     "type": "object",
diff --git a/schema/omh/unit-value-range-1.0.json b/schema/omh/unit-value-range-1.0.json
index ee607757..ada42936 100644
--- a/schema/omh/unit-value-range-1.0.json
+++ b/schema/omh/unit-value-range-1.0.json
@@ -1,6 +1,10 @@
 {
     "$schema": "http://json-schema.org/draft-04/schema#",
-
+    "deprecation": {
+        "reason": "This schema is now deprecated, in favor of the IEEE 1752.1 schema of the same name.",
+        "supersededBy": "https://w3id.org/ieee/ieee-1752-schema/unit-value-range.json",
+        "date": "2024-01-30"
+    },
     "description": "This schema represents a range of numerical values with a unit of measure. The lower and upper boundaries are included in the interval.",
 
     "type": "object",
diff --git a/schema/omh/volume-unit-value-1.x.json b/schema/omh/volume-unit-value-1.x.json
index 695c84d2..73083177 120000
--- a/schema/omh/volume-unit-value-1.x.json
+++ b/schema/omh/volume-unit-value-1.x.json
@@ -1 +1 @@
-volume-unit-value-1.0.json
\ No newline at end of file
+volume-unit-value-1.1.json
\ No newline at end of file