diff --git a/.changeset/dynamic-param-dash.md b/.changeset/dynamic-param-dash.md
new file mode 100644
index 0000000000..4d5cec4895
--- /dev/null
+++ b/.changeset/dynamic-param-dash.md
@@ -0,0 +1,5 @@
+---
+"@remix-run/router": patch
+---
+
+Fix bug where dashes were not picked up in dynamic parameter names
diff --git a/packages/react-router/__tests__/generatePath-test.tsx b/packages/react-router/__tests__/generatePath-test.tsx
index fe5e860056..70232f7d46 100644
--- a/packages/react-router/__tests__/generatePath-test.tsx
+++ b/packages/react-router/__tests__/generatePath-test.tsx
@@ -52,6 +52,12 @@ describe("generatePath", () => {
       // incorrect usage but worked in 6.3.0 so keep it to avoid the regression
       expect(generatePath("/courses/*", { "*": 0 })).toBe("/courses/0");
     });
+
+    it("handles dashes in dynamic params", () => {
+      expect(generatePath("/courses/:foo-bar", { "foo-bar": "baz" })).toBe(
+        "/courses/baz"
+      );
+    });
   });
 
   describe("with extraneous params", () => {
diff --git a/packages/react-router/__tests__/path-matching-test.tsx b/packages/react-router/__tests__/path-matching-test.tsx
index 1ef1c127ec..5f00c2445b 100644
--- a/packages/react-router/__tests__/path-matching-test.tsx
+++ b/packages/react-router/__tests__/path-matching-test.tsx
@@ -130,6 +130,44 @@ describe("path matching", () => {
 
     expect(pickPaths(routes, "/page")).toEqual(["page"]);
   });
+
+  test("dynamic segments can contain dashes", () => {
+    let routes = [
+      {
+        path: ":foo-bar",
+      },
+      {
+        path: "foo-bar",
+      },
+    ];
+
+    expect(matchRoutes(routes, "/foo-bar")).toMatchInlineSnapshot(`
+      [
+        {
+          "params": {},
+          "pathname": "/foo-bar",
+          "pathnameBase": "/foo-bar",
+          "route": {
+            "path": "foo-bar",
+          },
+        },
+      ]
+    `);
+    expect(matchRoutes(routes, "/whatever")).toMatchInlineSnapshot(`
+      [
+        {
+          "params": {
+            "foo-bar": "whatever",
+          },
+          "pathname": "/whatever",
+          "pathnameBase": "/whatever",
+          "route": {
+            "path": ":foo-bar",
+          },
+        },
+      ]
+    `);
+  });
 });
 
 describe("path matching with a basename", () => {
diff --git a/packages/router/utils.ts b/packages/router/utils.ts
index a8c35d9595..c845d0285f 100644
--- a/packages/router/utils.ts
+++ b/packages/router/utils.ts
@@ -685,7 +685,7 @@ function rankRouteBranches(branches: RouteBranch[]): void {
   );
 }
 
-const paramRe = /^:\w+$/;
+const paramRe = /^:[\w-]+$/;
 const dynamicSegmentValue = 3;
 const indexRouteValue = 2;
 const emptySegmentValue = 1;
@@ -822,7 +822,7 @@ export function generatePath<Path extends string>(
         return stringify(params[star]);
       }
 
-      const keyMatch = segment.match(/^:(\w+)(\??)$/);
+      const keyMatch = segment.match(/^:([\w-]+)(\??)$/);
       if (keyMatch) {
         const [, key, optional] = keyMatch;
         let param = params[key as PathParam<Path>];
@@ -967,10 +967,13 @@ function compilePath(
       .replace(/\/*\*?$/, "") // Ignore trailing / and /*, we'll handle it below
       .replace(/^\/*/, "/") // Make sure it has a leading /
       .replace(/[\\.*+^${}|()[\]]/g, "\\$&") // Escape special regex chars
-      .replace(/\/:(\w+)(\?)?/g, (_: string, paramName: string, isOptional) => {
-        params.push({ paramName, isOptional: isOptional != null });
-        return isOptional ? "/?([^\\/]+)?" : "/([^\\/]+)";
-      });
+      .replace(
+        /\/:([\w-]+)(\?)?/g,
+        (_: string, paramName: string, isOptional) => {
+          params.push({ paramName, isOptional: isOptional != null });
+          return isOptional ? "/?([^\\/]+)?" : "/([^\\/]+)";
+        }
+      );
 
   if (path.endsWith("*")) {
     params.push({ paramName: "*" });